Seven electronic subsidiary formerly known as Sutai Electronics was established in 2005 with a registered capital of 11.5 million yuan. Subsequently, according to the needs of business development, Suzhou Sanwen Electronic Technology Co., Ltd. was established, with two business divisions, wiring harness and PCBA R & D and production, and the registered capital increased to 46 million yuan.

Wiring Harness Division: Focusing on the design, manufacture and processing of all kinds of signal and circuit connection wiring harnesses, providing a series of customized services from product design and selection to assembly and testing. The main products include: network communication wiring harness, medical equipment wiring harness, office equipment wiring harness, home appliance wiring harness, automobile electric vehicle wiring harness, lighting equipment wiring harness, and various special connection wires. Products are widely used in new energy, machinery and equipment, special vehicles, automobile modification, industrial automation, data communication, home electronics and other fields.

PCBA Division: provides comprehensive R&D to end production solutions including PCB layout design, PCBA board copying, auxiliary design, component procurement, patch processing, PCBA assembly, complete assembly, testing, cable and accessory services. With more than 6 years of research and development and production experience, Sanwen has gained a good reputation in the industry. Products are mainly used in medical, industrial control, automotive electronics, high-end electronic consumer and other fields; By providing wiring harness components +PCBA one-stop solution, high mixing degree, small and medium-sized batch and professional project team, to provide small and medium-sized customers with ultra-cost-effective quality services.