APT is a Sino-Canadian joint venture specialized in passive fiber-optic components, such as patchords, connectors, pigtails, splitters, and adapters. Other components used in access networks, CATV, and communications, such as transimiter, amplifier, splice closure, etc. We are the biggest ISO9000 certified company with advanced equipments in the north of China. Optical fiber from Cornning .Ferrules are imported from Japan. The characters of the surface of polishing ferrules are accord with even exceed IEC.Top-quality and pretty good after-sale service will be guaranteed. Welcome to enquiry us and visit our company to cooperate. Look forward to your reply soon sincerely. Thanks!