Toploop Corp. located in Taiwan. Our main category products are DSX-DDF (SME1 / STM1…etc.) and Optical Fiber Component (DWDM, WDM, PLC Splitter and attenuator etc.). Toploop is not only a vendor who providing total network or communication solutions but also cooperating Chung Hwa Telecom with many tenders, such as VDSL, OXC, NGN and EPON projects.

Our products make it easier for our customers to innovate, compete and continue to drive down the cost of optical communication hard wares worldwide. Besides, Toploop takes advantage of accurate alignment and package technique to make variable optical attenuator and collimator. Using stable and reliable Zr ferrule components--- Patch Cord (Jumper),Attenuator (Fixed or Variable) and Terminator during the period of higher speed of transmission to make running system with much less bit error. OEM & ODM Development! We already got iso-9001 & CE certificate!!