ONETONG Optical Technology Co., Ltd is a leading optical transceiver manufacturer in China, entirely devotd to the R&D, production, distribution and customer service of optic-fiber transceiver and componnent. On the basis of advanced technology, professional R&D experts, and many years of experience in fiber-optic field, we can provide customer worldwide innovative customized products and service. ONETONG is one of the earliest factories in China that successfully developed 10G/40G series optical modules. At present we have a full optical transceiver product portfolio, includes 1x9series, XFP, X2, XENPAK, SFP+, SFP, DWMW SFP, SFF, GBIC, QSFP+, CFP, xPON, TOSA, ROSA, BOSA and other passive devices/modules, which are widely compliant to Ethernet, SDH/SONET, SAN, Vedio monitor and so on. By its superior technology, reliable quality, competive price and excellent service, ONETONG succeeds to be qualified supplier of many well-known domestic and overseas optical telecom system companies. We always adhere to our enterprise philosophy of "Quality first, People-orientation, Technology for progress, Innovation for development, environment friendly" to continually improve our products and services to better meet the needs of our customers and continue to drive our enterprise to grow and prosper. The OEM and ODM service is also acceptable, you are welcome to inquire us to get more infomations. ONETONG has successfully passed the audit and approval for fiber-optic industry qualification, all products are full compliant with ISO9001 certification, FCC, RoHS, and CE certification, all certifications show as follow: