Founded in 2001, GLsun Science And Tech Co., Ltd , Guilin, China, designs, develops, manufactures and markets advanced optical components and modules. GLSUN holds many technical patents on optics. Product lines include Optical Switches, Free Space Isolator, MEMS VOA,CWDM/DWDM components, Optical Modules  and Custom Optical test systems.GLsunis has been growing rapidly and has now become one of the largest Optical Switch & component manufacturers in Asia today. The company is well reputed and widely perceived as top quality, cost-effective, Pro-active customer service and technically innovative.