Founded in 1994, Four Star Communication Parts Co., Ltd is located at No. 88 S338 Road Zhenjiang City Jiangsu Province China (230Km away from Shanghai).

DongGuan Sinyi Precision Metal Co., Ltd. Was founded in 2000, is a professional manufacturer specialized in producing the precision components for pressing dies, plastic molds, hardware molds and Punch Press Tooling etc. As well manufacturing different precision machinery components and fixtures for industries such as the metal-working, plastics, aerospace, automotive, medical, electronics, Military, Packaging, optical-communication, solar energy, instruments and so on. Today, We have more than 100 sets of high-precision tools and instruments in the company, including CNC working centers, CNC lathes, EDM machines, high-precision ID/od grinding machines, Swiss-made high-precision height gage, projector, and coordinate measuring machine(CMM).

Changzhou Wujin Fengshi Connectors Co., Ltd. (FS for short) is a manufacturer of radio frequency coaxial connectors and cable assemblies. The company was founded in 2001 and the self-built factory is located in the Yangtze River Delta, Wujin High-Tech Zone of Jiangsu Province, with convenient water, road and air transportation, covering an area of about 21, 000 square meters.

Ruien is China's foremost supplier of RF connectors. We have a professional technical staff, dedicated to the research, design and production of these and other complementary RF components.