CTC Technologies Co., LTD Main office is in Tianjin, China. We also have offices in Shenzhen and Hong Kong. We specialized in test equipments, such as spectrum analyzer, network analyzer, signal generator, WLAN tester, power meters, signal analyzer, power supply, RF/wireless communication test set, Bluetooth tester, shielding box, Oscilloscopes and so on which are made by Agilent, Anritsu, R&S ,Advantest, TEK etc.