Huawei Technologies Co.
ZTE Corporation
Great Wall International System Technology (Shenzhen) Co.
Hong Fu Jin Precision Industry (Shenzhen) Co.
Lenovo Information Products (Shenzhen) Co.
Emerson Network Power Co. Ltd.
Shenzhen Skyworth-rgb Electronics Co.
Shenzhen BYD Co.
Konka Group Co.
Epson Technology (Shenzhen) Co.
Shenzhen Samsung Cogent Mobile Communications Technology Co.
Memory Technology (Shenzhen) Co.
Shenzhen Ltd.
Fuqui Precision Components (Shenzhen) Co.
Shenzhen Saifa Microelectronics Co.
Fuji Xerox Hi-Tech (Shenzhen) Co.
Shenzhen Development Technology Co.
Shenzhen Myriad Bio-Medical Electronics Co.
Ricoh (Shenzhen) Industrial Development Co. Ltd.
Jingguan Technology (Shenzhen) Co.
Lianneng Technology (Shenzhen) Co.
QunKang Technology (Shenzhen) Co.
Ensmart Electronics (Shenzhen) Co.
Shenzhen Sage Samsung Co.
China Great Wall Computer Shenzhen Co.
Shenzhen BAK Battery Co. Shenzhen BAK Battery Co.
American Asahi Electric (Shenzhen) Technology Co.
Shenzhen CIMC Special Purpose Vehicle Co.
Hitachi Global Storage Technology Shenzhen Co.
Shenzhen Laibao High-Tech Co.
Brother Industries (Shenzhen) Co.
Shenzhen Tianma Microelectronics Co. Ltd.
Castrol (Shenzhen) Co.
Sunny Industrial (Shenzhen) Co.
Shenzhen Tongzhou Electronics Co.
Shenzhen Haizhu Storage Equipment Co.
Shenzhen Development Magnetic Recording Co.
Shenzhen Tektronix Co.
Shenzhen Konka Communication Technology Co. Ltd.
Olympus (Shenzhen) Industry Co.
Yulong Computer Communication Technology (Shenzhen) Co.
Timeless Plastic Electronics (Shenzhen) Co.
New Skyworth Electric (Shenzhen) Co.
Seco Electronics (Shenzhen) Co.
Shenzhen Zhongyu Yuanyi Digital Technology Co. Ltd.
New Meiya Electronics (Shenzhen) Co.
Shenzhen Shenzhou Computer Co.
Toshiba Copier (Shenzhen) Co.
HoLin Electronics Shenzhen Co.
Fuhong Precision Components (Shenzhen) Co.
Nantoo Electronics (Shenzhen) Co.
Hellman Electronics (Shenzhen) Co. Ltd.
JDX Optoelectronics (Shenzhen) Co.
Fujun Precision Industry (Shenzhen) Co.
McMillan Air Conditioning Co.
Merit Electronics (Shenzhen) Co.
The above units are quite famous in Shenzhen.