Zhejiang Zhongao Electric Co., Ltd. was founded in 1995. We are an all-embracing style developing enterprise, integrating research, design, manufacturing, shipping and storing and marketing. We are consistently taking efforts to meet different demands from society; supplying customers with technology-advanced and cost-competitive contactors, thermal overload relays, electromagnetic starters and more. Through more than 20 years' hard work, our products of ZHONGAO and SHIHMAO ELECTRIC brands are ...