Shenzhen Gongjin Electronics Co., Ltd. is a hi-tech enterprise which integrates professional products, R&D, production and sales. Founded in 1998, the Company has the trademark “T&W”.

China National Petroleum Corporation is an international comprehensive energy company which specializes in oil & gas business, engineering services, petroleum engineering construction,

CRRC is the world's largest supplier of rail transit equipment with the most complete product lines and leading technologies. Its main businesses cover the R&D, design,

Jiuzhou is a large-scale high-tech enterprise group focusing on the electronic information industry, and is committed to providing intelligent, safe and reliable military electronic systems and intelligent applications and serviceos for users.

Shenzhen SED Electronics Group Co. Ltd. is a large state-owned enterprise jointly invested by China Electronics Corporation (CEC) and China Electronics Financial Co., Ltd.

Founded in 1993, Yulong Computer Telecommunication Scientific (Shenzhen) Co., Ltd. is a professional provider of smart mobile terminal, mobile data platform system,

EVOC, founded in Shenzhen in 1993 and listed in Hong Kong Stock Exchange in 2003, is a high-tech enterprise, innovative enterprise and China top 500 enterprise who majors in research,marketing and system integration of special computers.

Located in Nanshan District - the intensive district of Shenzhen Special Economic Zone, Edan is a professional medical electronic instrument & apparatus supplier which integrates R&D,