Passive Optical Communications R & D and production of the device Guangzhou youke company, all major components provided by foreign well-known manufacturers. and the adoption of the most advanced production and testing equipment and technology to clean up the environment in the Super Production After repeated testing to ensure full compliance with TIA/EIA, the IEC could not be delivered, and other related standards. trial of high-quality products to its customers, but it can also enjoy the excellent services. At present, companies have to offer our customers the series scores of varieties product specifications.