Founded in 2001, Guilin GLsun Science and Tech Group Co., Ltd is a high-tech enterprise based in Guilin China, specializing in R&D, production, and sales of high-end semiconductor laser chips and optical active and passive components. Our wide product portfolio includes DFB LD chips, optical transceivers, optical switches, splitters, fiber patch cables, VOA, WDM device, modules, equipment, network solutions for data center, telecom. GLsun\'s capabilities span the entire industrial chain of design, packaging and manufacturing of semiconductor chips, modules, equipment terminals and applications, covering both communication and non-communication fields. We not only conduct independent research, development, and manufacturing, but also undertake all phases of OEM work.