We can supply the follow kinds of cisco products:  such as : SFP, GBIC, XFP, XENPAK, SFP+, CWDM, BIDI,

GBIC
WS-G5484
WS-G5486
WS-G5486
WS-G5487=
WS-G5483=
CWDM-GBIC-1470=
CWDM-GBIC-1490=
CWDM-GBIC-1510=
CWDM-GBIC-1530=
CWDM-GBIC-1550=
CWDM-GBIC-1570=
CWDM-GBIC-1590=
CWDM-GBIC-1610=
SFP:
GLC-SX-MM=
GLC-LH-SM=
GLC-EX-SM=
GLC-ZX-SM=
GLC-ZX-SM=
GLC-T
GLC-T
GLC-GE-100FX
CWDM-SFP-1470=
CWDM-SFP-1490=
CWDM-SFP-1510=
CWDM-SFP-1530=
CWDM-SFP-1550=
CWDM-SFP-1570=
CWDM-SFP-1590=
CWDM-SFP-1610=
CWDMSFP1470~1610-DDM
CWDMSFP1470~1610
CWDMSFP1270~1450
CWDMSFP1270~1450

2.125G SFP

DS-SFP-2G-FC-SW
DS-SFP-2G-FC-LW
DS-SFP-2G-FC-LW
DS-SFP-2G-FC-LW
DS-SFP-2G-FC-ZW
DS-SFP-2G-FC-ZW
CWDMSFP1470-1610   2.125G
CWDMSFP1470-1610   2.125G

4G  SFP

DS-SFP-4G-FC-SW
DS-SFP-4G-FC-LW
DS-4GCWDM-1470~1610

100M  SFP

GLC-FE-100LX
GLC-FE-100FX
GLC-FE-100EX
GLC-FE-100ZX

BIDI  SFP

GLC-BX-D
GLC-BX-U
GLC-BX-D
GLC-BX-U
GLC-BX-D
GLC-BX-U
GLC-BX-D
GLC-BX-U
GLC-FE-100BX-D
GLC-FE-100BX-u
GLC-FE-100BX-D
GLC-FE-100BX-u
BIDI GBIC
GBIC-BX-D
GBIC-BX-U
SFP  WITH DDM
SFP-GE-S
SFP-GE-L
SFP-GE-Z

XFP

XFP-10G-MM-SR
XFP-10GLR-OC192SR
XFP-10GER-OC192IR
XFP-10GZR-OC192LR
CWDMXFP 10KM
CWDMXFP 40KM

SFP+

SFP-10G-SR
SFP-10G-LR
SFP-10G-ER
DS-SFP-FC8G-SW
DS-SFP-FC8G-LW
CWDMSFP+ 10KM
CWDMSFP+ 40KM

X2

X2-10GB-SR
X2-10GB-LR
X2-10GB-ER
X2-10GB-ZR
X2-10GB-LRM

XENPAK

XENPAK-10GB-SR
XENPAK-10GB-LR
XENPAK-10GB-ER

 SFP DWDM

DWDMSFP
XFP DWDM
DWDMXFP
DWDMXFP
X2 DWDM
XENPAK DWDM

OC

Sonet(,OC12/OC48DDM)
SFP-OC3-MM
SFP-OC3-SR
SFP-OC3-IR1
SFP-OC3-LR1
SFP-OC3-LR2
SFP-OC12-SR
SFP-OC12-IR1
SFP-OC12-LR1
SFP-OC12-LR2
SFP-OC48-SR
SFP-OC48-IR1
SFP-OC48-LR2

GLC-SX-MM-RGD
GLC-LX-SM-RGD
GLC-ZX-SM-RGD