Shanghai Huyi Electric Technology Co., Ltd. is a company specializing in the production and processing of products such as test transformers, phase detectors, voltage testers, microcomputer relay protection testers, withstand voltage testers, DC resistance testers, clamp type grounding resistance testers, insulation resistance testers, sliding contact wires, DC high-voltage generators, and high current generators. It has a complete and scientific quality management system. The integrity, strength, and product quality of Shanghai Huyi Electric Technology Co., Ltd. have been recognized by the industry. Welcome friends from all walks of life to visit, guide and negotiate business.