Aitelong Technology Co., Ltd is the high-tech enterprise specially engaged in R&D, production and marketing of the following products: Optical communication tester Optical laser source Optical power meter Optical fusion splicer Optical fiber identifier Optical visual fault locator OTDR PON optical power meter Data transmission tester E1/Datacom transmission analyzer Communication Line Tester Tel Cable fault locator Tel Line Tester Earth Resistance Tester Single/Double clamp earth tester Battery testing equipment Battery conductance tester Storage battery comprehensive tester Cable/Pipe Locator We have passed authentication of ISO9000—2000 quality management system. All products are certified by Chinese authorized inspection department, and some of them have won SGS CE certificates. We are qualified supplier for HUAWEI, ZTE, Emerson Network Power, MGE and many other famous companies. If you are interested in our products, please feel free to contact us. Thank you!