Hengsheng Electronic Technologies Co. Ltd is established in 2001, headquarters located Hangzhou City, China, and factory branch Shenzhen , China. HengSheng a pioneer that has been audio-visual industrial for many years. Our main product include Portable ...

Grass Electronics Factory is a high-technology manufacturer that engaged in product research, production and marketing. specialized producing series of stepper motor driver, high-power switching power supply, LED constant current supply intelligent ...