Qingdao Applied Photonic Technology Co., Ltd. is a high-tech research and development enterprise specializing in the development, manufacturing, and sales of passive optical components and optoelectronic transmission equipment and CATV that have developed in synchronization with international advanced technology. APT's headquarters is located in the Qingdao Free Trade Zone, with offices in North America, India, Qatar, Australia, and Beijing, Guangzhou. APT provides advanced 100,000-class clean rooms of 4500 square meters. Our main products are WDM, PLC splitter, Fast connector, FTTH box, Fiber optic patch cord, Fiber Adapter, Fiber optical switch.