Qingdao Beitong Industry Co., Ltd. was established in August 1996, specializes in the production of precision metal stampings and die castings. Now, we are professional producing on optical transceiver housing(optical transceiver structure parts, from the mold design and development to production and service. ISO9001:2000, RoHS compliant, 1000 hrs Damp and Heat Reliability Test, 168 hrs Salt Spray Test, SGS report.