Yangzhou Kotuo Electric Technology Co., Ltd. is a manufacturer and seller of electrical testing equipment. The company is located in the historic city of Yangzhou, in Baoying, known as the "hometown of lotus roots" in China. The Beijing Hangzhou Grand Canal and the Beijing Shanghai Expressway pass through the city. The main products include a complete set of frequency conversion series resonance test equipment, DC resistance tester, zinc oxide lightning arrester tester, transformer ratio tester, high-voltage wireless phase analyzer, and circuit breaker characteristic tester.