Topstar Technology Industrial Co., Ltd. We ,TopStar,are one of the leading manufacturers of Fiber Optical transceivers. Our excellent Research and Development ability combined with our strong Manufacturing capacity,create the One-Stop souring of high Quality Product platform for our customers. TopStar believes in Innovation, we attracted a pool of the Best of the Best Engineering experts in the market to create our high-end brand products so called Top-Trans. We continuously invest in our R&D in order to maintain our leading position in the Market.TopStar proudly own 3,000 Square Meters complete Dust-Free workshop and together with 15 dedicated engineering experts in the R&D.Applying the industrial best Management Practice combined with full range of test equipments, we stand to be the expert in Optical Transceiver field. These expertise enabling us the ability to supply almost full series of High Quality products. Including:1*9, SFF, GBIC/ X2, XENPAK/SFP, SFP+/ EPON /GPON / XGPON/BIDI , CEDM / DWDM/CSFP/40G QSFP+/100G CFP,etc. We provide NOT only Solution, but also Value Added services Besides OEM transceivers.We also have rich source and significant stock for our Branded Optical Module products namely:Finisar,Cisco,Brocade,Avago, Juniper,Source,etc.We guaranteed 100% original and all come with one year warranty to satisfy your one-stand purchasing. Why Choose TopStar ?(1) More than 10 years experience in the field of Optical Fiber Modules.(2) More than 20% year-on-year growth in sales during the past 8 years.(3) Excellent track records with 8 years continuously no single major quality problem.(4) 500+ customers installed based globally including major operators.(5) OEM & ODM capability for major Telecom Equipment Vendors. (6) ISO9001,CE,FC,3C,ROHS, etc. Certified (7) Stock holds more than 200,000 transceiver modules at any one time for immediate delivery. These modules including QSFP+, CFP, 40G and 100G High-Tech products. (8) 100% in production testing equipment capable of conducting 12.5G Error Detector, Temperature & Humidity 86100C, Infiniium DCA-J ETOMA BI Series, etc. TopStar always have our own approach to better understanding your need and satisfaction. Join us now!TopStar -- Your Excellent One-stop Optical Network Transceiver Manufacturer in the World!