English English
Igwe eji ndọta na-adịgide adịgide

Igwe eji ndọta na-adịgide adịgide

Brushless Permanent magnet motors have the same working principle and application characteristics as general DC motors, and their composition is different. In addition to the motor itself, the former has one more commutation circuit, and the motor itself and the commutation circuit are closely combined. The motor of many small-power motors is itself integrated with the commutation circuit. From the appearance, the DC brushless motor is exactly the same as the DC motor.

Features of Our Brushless Permanent magnet motor

1) Using high-intelligence software control, the controller's heat is minimized with the most superior algorithm and hardware design, so that the matching between the controller and the motor is optimized.

(2) Using a powerful and intelligent microprocessor, the electrical speed is up to 80,000 rpm.

(3) The high-capacity design and high-quality automotive-grade electronic components make the controller more reliable.

(4) Strong anti-interference and anti-vibration performance.

(5) The starting current is large and there is no jitter, so that the motor obtains a large starting torque.

(6) During the whole operation of the motor, the vibration is small and the noise is small.

(7) Multi-level overcurrent protection.

(8) Stall protection, when the motor is blocked for a long time, the controller enters the stall protection to effectively prevent the motor and controller from being burnt.

(9) Anti-flying function, the controller detects the accelerator pedal/turner or the flying phenomenon caused by the line fault in real time, which improves the safety of the system.

Igwe eji ndọta na-adịgide adịgide

(10) Over temperature protection function.

(11) Stepless speed regulation, the operating voltage is 1.2V~4.2V.

(12) Brake power off function / brake energy feedback function.

(13) The hub motor drive has an electronic differential function.

(14) Three-speed control, forward, neutral, and reverse three, and the speed limit function is reversed.

(15) The speed signal line mainly transmits the speed signal to the instrument panel in real time.

(16) 485 communication / CAN bus communication function, can communicate with the host computer, or choose the company's vehicle controller product to achieve multiple motor drive control.

(17) The brushless motor controller has a unique MAP calibration technology to provide customers with "customized" services. According to the parameters of your motor: inductance, internal resistance, voltage, speed, magnetic pole pairs, etc. system optimization and matching. Let your motor perform at its best, the motor runs more smoothly, with less heat, lower noise and higher efficiency.

(18) Control the motor magnetic field according to the rotational speed to improve the motor starting low speed torque and speed regulation range.

The motor of the Brushless Permanent magnet motor itself is an electromechanical energy conversion part, which has sensors in addition to the motor armature and the permanent magnet excitation. The motor itself is the core of the DC brushless motor. It is not only related to performance indicators, noise vibration, reliability and service life, but also involves manufacturing costs and product costs. Due to the use of permanent magnetic field, the Brushless Permanent magnet motor can be freed from the traditional design and structure of general DC motors, meet the requirements of various application markets, and develop towards the convenience of copper-saving materials and manufacturing. The development of permanent magnet magnetic field is closely related to the application of permanent magnet materials. The application of the third generation of permanent magnet materials has promoted the development of DC brushless motors in the direction of high efficiency, miniaturization and energy saving.

Igwe eji ndọta na-adịgide adịgide
In order to achieve electronic commutation, there must be a position signal to control the circuit. Early use of electromechanical position sensors to obtain position signals has gradually been used to obtain position signals using electronic position sensors or other methods. The easiest way is to use the potential signal of the armature windings as the position signal.

Igwe eji ndọta na-adịgide adịgide
To achieve motor speed control, there must be a speed signal. The speed signal is obtained by obtaining a similar position signal. The simplest speed sensor is a combination of a frequency measuring tachogenerator and an electronic circuit.
The commutation circuit of the Brushless Permanent magnet motor consists of two parts: drive and control. These two parts are not easy to separate. In particular, the circuit for low power often integrates the two into a single ASIC.

Igwe eji ndọta na-adịgide adịgide
In a motor with a large power, the drive circuit and the control circuit can be integrated into one. The drive circuit outputs electrical power that drives the armature windings of the motor and is controlled by the control circuit. At present, the drive circuit has changed from a linear amplification state to a pulse width modulation switch state, and the corresponding circuit composition has also been converted from a transistor discrete circuit to a modular integrated circuit. Modular integrated circuits are composed of power bipolar transistors, power FETs, and isolation gate field effect bipolar transistors. Although the isolation gate field effect bipolar transistor is more expensive, it is more suitable from the perspective of reliable safety and performance.

Igwe eji ndọta na-adịgide adịgide

KP series electric flat car is the first choice

Sogears manufacturing is located in Wujin District, Changzhou City. For many years, it has been engaged in research, development, production and sales of high-efficiency DC permanent magnet brushless motors and their speed control systems. The company has superb professional and technical personnel, comprehensive and strict quality control system and fast and flexible service system. The company's products have 1-25KW DC permanent magnet brushless motor and its supporting control system. The company's products have superior performance and high reliability, and are widely used in electric flat cars, electric boats, handling machinery and equipment, industrial traction control, etc., and are well received by customers.

The company's patented brushless DC motor controller has high reliability and cost performance. The noise is extremely low, the heat dissipation is good, the machine is strong, and it can work reliably in various harsh environments. The company developed the DC brushless motor drive system for the KPD low-voltage rail electric flat car and the KPX battery-powered track flat car, which overcomes the DC brush motor. The defects in the system or the inverter + asynchronous motor system raise the flat drive technology to a new level.

Igwe eji ndọta na-adịgide adịgide
First, the basic functions and features of the brushless system:

1. The system includes: brushless DC motor + controller, which can easily realize various functions such as forward/reverse, stepless speed regulation, soft start, electronic EABS brake, parking brake, remote control, etc., complete with complete debugging test, performance Excellent and easy to use. For the KPD low-voltage rail electric flat car, it can be equipped with a special alternating-transformer rectifier module developed by our company. After 36V single-phase AC power is rectified, it is about 50V DC power, which directly supplies power to the DC motor, which can overcome the track length of the track AC motor. The pressure drop is large, and the flat car is difficult to start with load, which is especially suitable for long-distance orbit operation. Safe and convenient.

2. The DC brushless motor is a carbonless brush structure and does not generate sparks. No need to replace the carbon brush, protection grade: IP44, water, mud, soil will not enter the inside of the motor, compact structure, strong overload capacity, long service life.

3. Unique slow start and EABS brake: The permanent magnet brushless motor starts smoothly, softly and powerfully. Adjustable slow start time; brake stop process is soft, precise and safe. Perfect for loading round objects.

4. There is no safety hazard in the brushless system: there is no step-up transformer on the flat car, there is no dangerous high voltage. The AC36V track power is only about 50V DC after rectification, there is no safety hazard, and there will be no electric shock and casualties.

5, low carbon energy saving: permanent magnet brushless motor is small in size, light in weight, less heat, and high efficiency. Meet the national energy conservation and emission reduction requirements. It is an upgraded product of DC brush motor and AC asynchronous motor. It is a green and environmentally friendly motor when it is frequently started and stopped compared with AC asynchronous motor.

6, high reliability: brushless motor system waterproof, moisture, dust, shock, high temperature, maintenance-free. The controller and rectifier module adopt German imported automotive grade components, and the reliability is far higher than the industrial grade. After strict high temperature aging test, the motor runs more smoothly, with less heat, lower noise, higher efficiency, reliable performance and normal service life of more than 50,000 hours.

7. Excellent load characteristics, good low-speed performance, large starting torque, small starting current, and the need to meet the frequent starting of electric vehicles, saving energy. The motor runs efficiently over the entire speed range, which is a qualitative improvement over brushed DC motors and AC variable frequency motors (only high efficiency near the rated point).

8, pulsed power, in line with the battery discharge characteristics, does not require the battery to instantaneously output a large current, to prevent the battery from losing power instantaneously. Compared with brushed DC motor or AC variable frequency motor, it can run 30%~50% of mileage on one charge, which can increase battery life by 50%.

9. The Brushless Permanent magnet motor is made from plug-in rare earth magnetic steel, and the permanent magnet adopts 180 degree high temperature resistant rare earth permanent magnet. It can work safely and reliably in extremely harsh environments. It is especially suitable for bumps, repeated starts, high speed, high torque starting, and forward and reverse running.

10, excellent speed control performance, full load stepless speed regulation in the full speed range.

11. The motor adopts imported oil-containing high-speed bearings, which is maintenance-free, high in reliability and long in motor life. The motor has horizontal and hanging type, with flanged end cover, double shaft extension and spline shaft extension. It can be customized according to customer requirements for various voltages, various speeds and various power requirements. Motor drive system.

12, easy to install and use, and remote control, industrial operation handle seamless docking.

Igwe eji ndọta na-adịgide adịgide

Second, the electric flat car electric drive program comparison

1, DC brush motor

The brushed DC motor has a structure of the collector ring carbon brush, which generates sparks when the motor is running. Especially when the motor is running at high speed, it will generate serious ring fire and cause radio interference. It is necessary to periodically brush the carbon brush. Due to the need to replace the carbon brush, the motor It can only be used in the form of open protection. The motor cooling should enter the inside of the motor. The motor should not be suitable for flammable, explosive, dusty, muddy, open-air or wet places. In addition, brushed DC motor motor has low efficiency, battery capacity is large, motor is large, and explosion-proof is difficult, and it will gradually fade out of the market.

2, inverter + asynchronous motor

In this scheme, the power is drastically reduced at low speed of the motor, the starting torque of the motor is small, the starting current is large, the overall efficiency is low (only high efficiency is near the rated speed), and the motor cannot be stably operated at low speed (below 5HZ). In order to improve the starting performance of the vehicle, the motor is often selected according to the starting requirements, and the motor power reserve is large, resulting in the phenomenon of “large horse-drawn car”, low motor efficiency, large capacity of the battery and the inverter, lowest cost performance, high cost of use, and will be quickly Eliminated.

Igwe eji ndọta na-adịgide adịgide

3, asynchronous motor

Since the motor is directly started or Y/D started, the starting current is equal to (4-7) times the rated current, which will cause a serious impact on the KPX battery, or cause the KPD rail pressure drop to be too high, and the high current generated at the start and When it is shaken, it is extremely unfavorable for the safe operation of the flat car.

4, DC brushless system - dedicated rectifier module DC brushless motor

  ụdị

  voltaji

  V)

  

  ike

  (KW)

  

  Speed

  (r/min)

  

  Ugbu

  A)

  

  Ogo 

  (Mm)

  

  YPM24V102-1500

  

  24

  

  1

  

  1500

  

  48

  

  Y2-80

  

  YPM24V152-1500

  

  24

  

  1.5

  

  1500

  

  70

  

  Y2-90

  

  YPM24V222-1500

  

  24

  

  2.2

  

  1500

  

  103

  

  Y2-100

  

  YPM36V150-1500

  

  36

  

  1.5

  

  1500

  

  47

  

  Y2-90

  

  YPM36V222-1500

  

  36

  

  2.2

  

  1500

  

  68

  

  Y2-100

  

  YPM48V102-1500

  

  48

  

  1

  

  1500

  

  24

  

  Y2-80

  

  YPM48V152-1500

  

  48

  

  1.5

  

  1500

  

  35

  

  Y2-90

  

  YPM48V222-1500

  

  48

  

  2.2

  

  1500

  

  52

  

  Y2-100

  

  YPM48V302-1500

  

  48

  

  3

  

  1500

  

  70

  

  Y2-112

  

  YPM48V402-1500

  

  48

  

  4

  

  1500

  

  93

  

  Y2-112

  

  YPM48V552-1500

  

  48

  

  5.5

  

  1500

  

  128

  

  Y2-112

  

  YPM48V632-1500

  

  48

  

  6.3

  

  1500

  

  147

  

  Y2-132

  

  YPM48V752-1500

  

  48

  

  7.5

  

  1500

  

  175

  

  Y2-132

  

  YPM48V103-1500

  

  48

  

  10

  

  1500

  

  233

  

  Y2-160

  

  YPM48V123-1500

  

  48

  

  12

  

  1500

  

  280

  

  Y2-160

  

Igwe eji ndọta na-adịgide adịgide

The control circuit is used to control the speed, steering, current (or torque) of the motor, and to protect the motor from overcurrent, overvoltage, overheating, and the like. The above parameters are easily converted into analog signals, and the control is relatively simple, but from the development point of view, the parameters of the motor should be converted into digital quantities, and the motor is controlled by a digital control circuit. Currently, the control circuit has three components: an application specific integrated circuit, a microprocessor, and a digital signal processor. In the case where the motor control requirements are not high, the application of the integrated circuit to the control circuit is a simple and practical method. The use of digital signal processor to form the control circuit is the future development direction. The digital signal processor will be introduced in the following AC synchronous servo motor.

Igwe eji ndọta na-adịgide adịgide
At present, the DC brushless motor in the micro power category is a new type of motor that has developed rapidly. Since each application field requires its own unique DC brushless motor, there are many types of DC brushless motors. There are generally external computer memory, flat coreless motor structure for VCD, DVD, CD spindle drive, outer rotor motor structure for small fan, multi-pole magnetic field structure and built-in structure for home appliances, multi-pole and outer rotor for electric bicycle Structure and so on. The motor of the above-mentioned DC brushless motor itself and the circuit are integrated, and the use is very convenient, and its output is also very large. In order to meet the needs of high-volume, low-cost markets, the production of DC brushless motors must be economies of scale. Therefore, DC brushless motors are a high-input, high-output industry. At the same time, we should consider that the market is also constantly developing. For example, the motor for household air conditioners is being turned from 3A to 3D, and a large number of small and medium power DC Brushless Permanent magnet motors are needed. It is also imperative to research and develop medium and small power DC brushless motors.

Igwe eji ndọta na-adịgide adịgide
Brushless Permanent magnet motor (BLDCM) is developed on the basis of brushed DC motor, but its driving current is uncompromising AC; Brushless Permanent magnet motor can be divided into brushless rate motor and brushless torque motor. . Generally, there are two kinds of driving currents of a brushless motor, one is a trapezoidal wave (generally "square wave"), and the other is a sine wave. Sometimes the former is called DC brushless motor, and the latter is called AC servo motor, which is exactly one type of AC servo motor.

Igwe eji ndọta na-adịgide adịgide
In order to reduce the moment of inertia, Brushless Permanent magnet motors usually adopt a "slender" structure. Brushless Permanent magnet motors are much smaller in weight and volume than brushed DC motors, and the corresponding moment of inertia can be reduced by 40% to 50%. Due to the processing of permanent magnet materials, the general capacity of Brushless Permanent magnet motors is below 100 kW.

Igwe eji ndọta na-adịgide adịgide
The motor has good linearity of mechanical characteristics and adjustment characteristics, wide speed regulation range, long service life, easy maintenance and low noise, and there is no series of problems caused by brushes. Therefore, such motors have great problems in the control system. Application potential.

Igwe eji ndọta na-adịgide adịgide

For many years, he has been engaged in research and development, production and sales of high-efficiency DC permanent magnet motors and their speed control systems. The company has superb professional and technical personnel, comprehensive and strict quality control system and fast and flexible service system. At present, the company's products have 1-15KW DC permanent magnet brushless motor and its supporting control system, DC-DC converter, fully automatic intelligent unattended charger. The company's products have superior performance and high reliability, and are widely used in electric vehicles, electric boats, handling machinery and equipment, industrial traction control, etc., and are well received by customers.

Igwe eji ndọta na-adịgide adịgide
Respect customers, understand customers, provide customers with satisfactory products and services, and be friends forever. Let our customers know, be familiar with, and recognize Yongpei and trust Yongpei. All staff of the company warmly welcome friends from home and abroad to visit us. We will return your support and love with superior performance, high quality, reasonable price and perfect after-sales service!

Igwe eji ndọta na-adịgide adịgideIgwe eji ndọta na-adịgide adịgide
 
Basic functions and features of DC brushless power system:
 
1. The system includes: DC permanent magnet brushless motor + controller, which can easily realize forward/reverse speed, stepless speed regulation, slow start and slow stop, parking parking brake, wireless remote control (requires wireless remote control), etc. , the overall debugging test, excellent performance, easy to use. The 36V AC power supply for the KPD series track can be equipped with a DC straightening rectifier module. After rectification, the 48V DC power is supplied to the DC motor for safe and convenient operation.


2. The motor is a brushless structure and does not generate sparks. No need to replace the carbon brush, protection grade: IP54, water, mud, soil will not enter the inside of the motor, compact structure, strong overload capacity, long service life.

Igwe eji ndọta na-adịgide adịgide
3. Excellent load characteristics, good low-speed performance, large starting torque, small starting current, and the need to meet the frequent starting of electric vehicles, saving energy. The motor runs efficiently over the entire speed range, which is a qualitative improvement over brushed DC motors and AC variable frequency motors (only high efficiency near the rated point).


4. The motor is equipped with a dedicated controller, using high-performance imported power modules and high-grade imported control chips, using industrial-grade components, using an ambient temperature of -20 degrees, and military-grade requirements of up to -40 degrees. The motor runs smoothly, with less heat, low noise, high efficiency and reliable performance.


5. Pulsed power consumption, in line with the battery discharge characteristics, does not require the battery to instantaneously output a large current to prevent the battery from losing power instantaneously. Compared with brushed DC motor or AC variable frequency motor, it can run 30%~50% of mileage on one charge, which can increase battery life by 50%.


6. The motor adopts plug-in rare earth magnet steel, which is especially suitable for bumps, repeated starts, high speed, large torque starting, and forward and reverse running.


7. The rotor of the motor has a strong magnetic field. It has good power generation effect in the sliding and braking state. It does not need to absorb the battery power excitation (required by brushed DC motor or AC motor), the energy feedback effect is good, and the electric braking effect is good.


8. The motor adopts imported oil-containing high-speed bearings, which is maintenance-free, highly reliable and has long motor life. The motor has horizontal and hanging type, can be extended with the end of the end cover, can adopt double shaft extension, spline shaft extension, can be customized according to customer needs of various voltages, various speeds, various power requirements of DC Brush power system.
 
Comparison of common electric drive schemes for electric flat cars:
 
1, DC brush motor
The brushed DC motor has a structure of the collector ring carbon brush, which generates sparks when the motor is running. Especially when the motor is running at high speed, it will generate serious ring fire and cause radio interference. It is necessary to periodically brush the carbon brush. Due to the need to replace the carbon brush, the motor It can only be used in the form of open protection. The motor cooling should enter the inside of the motor. The motor should not be suitable for flammable, explosive, dusty, muddy, open-air or wet places. In addition, brushed DC motor motor has low efficiency, battery capacity is large, motor is large, and explosion-proof is difficult, and it will gradually fade out of the market.

Igwe eji ndọta na-adịgide adịgide

2, inverter + asynchronous motor
In this scheme, the power is drastically reduced at low speed of the motor, the starting torque of the motor is small, the starting current is large, the overall efficiency is low (only high efficiency is near the rated speed), and the motor cannot be stably operated at low speed (below 5HZ). In order to improve the starting performance of the vehicle, the motor is often selected according to the starting requirements, and the motor power reserve is large, resulting in the phenomenon of “large horse-drawn car”, low motor efficiency, large capacity of the battery and the inverter, lowest cost performance, high cost of use, and will be quickly Eliminated.

3, asynchronous motor
Since the motor is directly started or Y/D started, the starting current is equal to (4-7) times the rated current, which will cause a serious impact on the KPX battery, or cause the KPD rail pressure drop to be too high, and the high current generated at the start and When it is shaken, it is extremely unfavorable for the safe operation of the flat car.

4, DC brushless power system - AC straight rectifier module (KPD series flat car) + controller + brushless motor
The best solution, Brushless Permanent magnet motor starting torque is large (up to 4 to 5 times the rated time), the starting current is small (the starting current is only 1/5 of the asynchronous machine when the torque is the same), brushless structure, small size High power, high efficiency, stepless speed regulation, good protection performance and high cost performance can extend the life of the motor, increase the mileage of the battery, reduce the weight of the vehicle and reduce the cost.
The motor can be selected according to the power during normal operation, and no power reserve is needed, which solves the problem of “large horse-drawn car”, can reduce the battery capacity, save the input cost of the device, and improve the operating efficiency of the system.

Igwe eji ndọta na-adịgide adịgide
 
In combination with the working characteristics of the self-propelled aerial work platform, the current mainstream of the aerial work platform selects the DC permanent magnet brushless motor as the drive motor. Then, what are the advantages of DC permanent magnet brushless motor? Permanent magnet Brushless Permanent magnet motor is produced and developed along with digital control technology. Therefore, digital control based on single chip microcomputer and DSP is the main control of Brushless Permanent magnet motor. means. The permanent magnet Brushless Permanent magnet motor mainly performs the following aspects of control.

Igwe eji ndọta na-adịgide adịgide

 (1) Commutation control: For systems with position sensors, regular commutation should be performed according to the signal of the position sensor to correctly switch the current of each phase; for systems without position sensor, it should be calculated according to the induced electromotive force signal. To the point, determine which corresponds to the power-on and which corresponds to the power-off.

(2) Speed ​​control: The speed control principle of the Brushless Permanent magnet motor is the same as that of the ordinary DC motor. The average voltage of the armature can be controlled by the PWM method to realize the speed control. The PWM can be automatically output by using a PWM port microcontroller and DSP, making the speed control very easy.

(3) Commutation control: The forward and reverse control of the motor can be realized by changing the energization order of each phase.

During the working process of the permanent magnet Brushless Permanent magnet motor, the windings of each phase are regularly alternately turned on. When the winding is not conducting, due to the energy storage of the winding coil, an induced electromotive force is generated, and the induced electromotive force waveform can be detected at both ends of the winding. come out. Using this feature of the induced electromotive force, the position sensor function on the rotor can be replaced to obtain the commutation information. In this way, a permanent magnet brushless DC electric motor with a simpler structure and more reliable performance appears

Igwe eji ndọta na-adịgide adịgide

The permanent magnet three-phase Brushless Permanent magnet motor is selected as the drive motor for the performance requirements of the drive motor for the self-propelled aerial work platform.

Nowadays, Brushless Permanent magnet motors can basically be used in every industry. From here, it can be seen that DC brushless motors are widely used in the market and are useful in the process of using Brushless Permanent magnet motors. In many industries, DC brushless motor products are used. Generally, there are many use of Brushless Permanent magnet motors in the process of using them. Nowadays, there are many uses for Brushless Permanent magnet motors in household appliances, and which aspects can be applied. What about it?

Igwe eji ndọta na-adịgide adịgide
1, kitchen appliances
The modern kitchen is full of electrical equipment. Now it is quite satisfactory in the process of using household appliances Brushless Permanent magnet motor. Especially in the process of using kitchen appliances, it can be better to use the help of household Brushless Permanent magnet motor. It is also useful in the process of using kitchen appliances, such as using a blender, juicer, coffee machine, tea machine, electric knife, egg beater, rice cooker, food processor, grain grinder, Household appliances such as Brushless Permanent magnet motors can be used for appliances such as vertical mixers, meat grinders, and electric cutters.
2, smart home
Home intelligence has gradually become the trend of the times. In the process of using the home equipment for it, it is also possible to use the DC brushless motor of the household appliance. For example, when using the exhaust fan or the electric heater, it is quite sure. Generally, the smart home equipment is quite good. At least in terms of quality, it can provide protection. In addition, there are circulating fans, humidifiers, humidifiers, air fresheners, cold, heaters, soap dispensers, hand dryers, smart door locks, electric doors, windows, curtains, etc.
3, floor care
The important parts and objects of household sanitation are the floor, and there are more and more kinds of floor care electric products. There are carpet cleaning machines, electric vacuum cleaners, hand-held vacuum cleaners, floor grinding machines, etc. They can also apply brushless DC. Motor's.
4, white goods
What is white goods? White goods, as the name suggests, are white home appliances. White goods can reduce people's labor intensity (such as washing machines, some kitchen appliances), improve living environment and improve material living standards (such as air conditioners, refrigerators, etc.). The technology of applying Brushless Permanent magnet motors such as air conditioners, refrigerators, air purifiers, microwave ovens, range hoods, dishwashing hot water pumps, washing machine heat pumps, etc. is quite mature.

Igwe eji ndọta na-adịgide adịgide
   The above is where the Brushless Permanent magnet motor can be applied in household appliances. The DC brushless motor and DC brushless driver officially launched by MOONS MOONS are less noisy due to design innovation than the existing products in the market. The advantages of smaller vibration and longer working life. Products can be widely used in factory automation, pump valves, solar equipment, automotive equipment and so on. Household appliances are one of the applications of constant-drive Brushless Permanent magnet motors. In addition, there are many other fields that can be applied.
 

Ụbọchị

06 November 2019

Tags

DC moto

 Geared Motors na onye na-emepụta moto eletriki

Ọrụ kachasị mma site na ọkachamara nnyefe ọkachamara na igbe mbata gị ozugbo.

Bịanụ na Touch

Ụgwọ nke ụlọ ọrụ Yantai Bonway Manufacturer Co.,Ltd

Ano.160 Changjiang Road, Yantai, Shandong, China(264006)

T + 86 535 6330966

W + 86 185 63806647

© 2024 Sogears. Ikike niile echekwabara.