Changchun ji xiang optoelectronic co., ltd (cjx) located in changchun high-new technology development zone, over 3000 square meters factory building, is dedicated to the manufacturing ,designing and marketing of precision optical elements. cjx has advanced manufacturing equipments and inspecting instruments. founded in 1995. cjx has advanced technique and processing capacity to can design and manufacture complex optical systems and parts upon customers enquiry. we have strict quality standard f