Qingdao applied Photonic Technologies Co.Ltd,APT for short is a high-tech enterprise specialized in development)manufacturing and marketing of passive optical components and photoelectric transmission equipments and CATV that in-phase with international advanced technology.With headquarters in Qingdao Free Trade zone.APT runs its offices in North America and ShenZhen of China. All the production equipment and inspection instruments are from the USJapan,Canada and Taiwan.