Zhejiang Jarol Technology Co., Ltd. It was established in 2002, located in a beautiful coastal city,China Nuclear Power City---Haiyan ,Zhejiang Province. The company is mainly engaged in R&D, production, sales for products of industrial control system and nuclear power comprehensive operation and maintenance services. We have leading research and development capabilities and have nearly 100 inventions, utility models, appearance patents and software copyrights. The main products cover industrial automation products serving various fields, including frequency inverters represented by JAC200, JAC300, JAC580, JAC880, servo systems, engineering cabinets with IOT(The Internet of things) functions, nuclear-grade inverter cabinets and industrial control system integration solutions. Products are widely used in elevators, air compressors, lifting, machine tools, metal products, wire and cable, plastics, printing and packaging, textile and chemical fiber, building materials, metallurgy, petroleum, chemical, nuclear power, municipal, rail transit and other industries. In the future, Jarol will continue to promote the localization process of nuclear power equipment in China, and form an industrial model combining Industry 4.0 with variable frequency industrial control applications to enhance the core competitiveness and sustainable development company