Shenzhen Zhongtian Hengji Technology Co., Ltd.

[ Manufacturer Trader ]Main business are UPS uninterrupted power supply and lightning protection product.

Shenzhen Keying Electronic Technology Co., Ltd.

[ Manufacturer Trader ]Main business are Lightning protection device, Optoelectronic isolator, Balun, RS232 - RS485/422 photoelectric isolation converter, Serial port isolator, Lightning arrester etc.