Below follows an overview of some established suppliers in China:
- CYD Electronics (Shenzhen) Co., Ltd
- Guangzhou Yison Electron Technology Co., Limited
- Dongguan Siyoto Electronics Co. Ltd
- Shenzhen Joway Power Supply Co. Ltd
- Shenzhen Senshao Technology Co., Ltd.
As you can see above, these suppliers are concentrated to the pearl river delta, and Shenzhen and Dongguan i particular.