Established in 1998, Shanghai Joinwit Optoelectronics Technology Company specializes in the development and manufacturing of benchtop and handheld fiber optic testing equipment. The company has earned a range of international certifications, including ISO9001 quality certification, ISO14001 environmental certification, CE certification, FCC certification, and RoHS compliance. Joinwit has also secured numerous technical patents, software copyrights, and technological achievements in the field of optoelectronic testing.