Dear Sirs we sully OEM Cisco ,3com,H3C,Huawei SFP modules . if you need more information , pls advises me . GLC-SX-MM GLC-LH-SM GLC-ZX-SM GLC-T WS-G5484 WS-G5486 WS-G5487 WS-G5483 DS-SFP-2G-FC-SW DS-SFP-2G-FC-LW DS-SFP-2G-FC-ZW ONS-SE-4G-MM GLC-FE-100LX GLC-FE-100FX GLC-FE-100EX GLC-FE-100ZX GLC-BX-D GLC-BX-U GLC-FE-100BX-D GLC-FE-100BX-U SFP-GE-S SFP-GE-L SFP-GE-Z XENPAK-10GB-SR XENPAK-10GB-LR XENPAK-10GB-ER X2-10GB-SR X2-10GB-LR X2-10GB-ER SFP+10GB-SR SFP+10GB-LR SFP-OC3-MM SFP-OC3-SR