Our basic production line is as following: WDM Series 1310/ 1550WDM, 980/ 1550WDM, 1480/ 1550WDM, 1310/ 1490/ 1550WDM 1* 2CWDM, 1* 4CWDM, 1* 8CWDM, 1* 16CWDM, 1* 32CWDM 4ChannelDWDM, ....