Joinwit

Shanghai Joinwit Optoelectronic Technology Co., Ltd., established in 1998, is a high-tech enterprise specializing in the R&D of optoelectronic testing instruments. The company has passed ISO9001 quality system certification, ISO14001 environmental certification, and Shanghai High-tech Enterprise certification, and holds multiple technical patents, software copyrights, and scientific achievements. Its main products include light sources, optical power meters, PON power meters, fiber identifiers, optical talk sets, variable optical attenuators, OTDRs, insertion/return loss testers, polarization extinction ratio testers, laser chip and aging test systems, multi-application test platforms for fiber devices, and multi-channel comprehensive testers. These products are widely used in optical communication network construction and maintenance, optical sensing networks, and production of optical devices/equipment.