GLsun Science and Tech Co., Ltd, own-patents, 3rd party ROHS tests, ISO 9001 and 14001 certified manufacturer, with factory area of 30000+m2, focus on Datacom, Telecom, RFoG, Medical Field and Petroleum Exploration etc. With a broad product portfolio and tremendous production capacity, our products include: Various kinds of Optical Switches (Relay, MEMS, Magnet, Mini type), Free Space Isolators, VOA, Splitters, WDMs, CWDMs, DWDMs, and Optical Line Protection (OLP), Optical Bypass Protection (OBP) equipment, Customization Active & Passive equipment design etc.