Sharetop Technology Co.ltd isa high-tech corporation specializing in researching andmanufacturing broadband networking access equipment,It is located at Yingtai industrial zone, Longhua District of Shenzhen, China.Theproduct consists of two parts,of which one is active opticalproducts mainly composed of EOC,EPON,Transceiver,Optical Moduleetc.the other kind is the passive optical products mainly composedof CWDW,DWDW,Branching Units,Circulator,Optical Switch etc.