Silicon Billion Technology Co., Ltd.

Xiamen Sijiao Optoelectronics Technology Co., Ltd. is a professional enterprise specializing in the R&D and sales of optical solid-state relays (SSRs). The company integrates the technical strengths of domestic and international optocoupler, power MOSFET, and silicon-controlled rectifier (SCR) chip manufacturers, pioneering multi-chip assembly technology while incorporating practical experience and lessons learned from global SSR application fields. It focuses on developing professional optical relays for motor control, communication, and instrumentation applications, providing customized solutions to clients. Sijiao's products implement stringent quality control from the R&D and design stage, with core technologies patented and certified by national authorities. The production process has achieved UK certifications for quality management. Additionally, the company's founder has received recognition through Xiamen City's "Double Hundred Talent Program" in the solid-state relay field. Dedicated to delivering the highest-quality products to our clients.