Chongqing Chuanyi Seventeen Factory Co., Ltd. is mainly engaged in the research and production of thermocouples, thermal resistors, bimetallic thermometers, integrated temperature transmitters, and electric heaters. It is a wholly-owned subsidiary of Chongqing Chuanyi Automation Co., Ltd. (stock code 603100) and a highly influential professional manufacturer of temperature instruments and electric heaters in China, with an annual operating scale of over 100 million yuan. The company has over 50 years of experience in temperature instruments and over 30 years of experience in the production of special electric heaters. It is located in the beautiful Chongqing Social Development Comprehensive Experimental Development Zone - Beibei. In 1985, the company fully introduced the advanced Okazaki Institute armored thermocouple production line and testing equipment from Japan. In the same year, it successfully introduced the production and manufacturing technology of tubular electric heaters and a complete set of production and manufacturing equipment from Oakley Corporation in the United States. In 1989, the company's armored thermocouple (resistor) was listed as the 18th batch of substitute imported products by the Ministry of Mechanical and Electrical Engineering. In 1990, it drafted the industry standard JB/T5582-1991 "Technical Conditions for Armored Thermocouples" on behalf of the domestic temperature instrument industry, which was later upgraded to the national standard GB/T18404-2001 "Armored Thermocouple Cables and Armored Thermocouples". The company has successively provided integrated solutions for combined units and localized imported equipment for CNPC, Sinopec, Baosteel, Ansteel and Shougang, and has provided a large number of products and technical services for five major power, Shenhua, Sinochem and middling coal groups for many years, winning high recognition from customers. Since 1994, the company has engaged in comprehensive technology research and development cooperation with domestic nuclear power research and design institutes, and has successfully developed second-generation, second-generation plus, and the latest AP1000 CAP1400、 The 1E level stabilizer electric heater, air conditioning system electric heater, and temperature instrument products required for nuclear power units such as the "Hualong One" technology route have been widely used in domestic and foreign nuclear power units, breaking the long-term monopoly of foreign companies and making great contributions to the localization of nuclear power equipment. The company has established a comprehensive quality management system and has successively passed ISO9001 quality management system certification, ISO14001 environmental management system certification, and ISO18001 occupational health and safety management system certification. It has also passed GJB9001B-2009 military quality management system certification, national nuclear safety regulation HAFOO3, and relevant quality system certifications of NQA-1 in the United States. Since its establishment, the company has always adhered to the service concept of "customers in Chuanyi's heart, Chuanyi by their side", providing high-quality products and professional services to customers in the fields of petrochemical, natural gas chemical, coal chemical, power, metallurgy, building materials, nuclear power, national defense industry and other fields at home and abroad, and has received widespread market praise. Success lies in cooperation and win-win cooperation for the world. Our company looks forward to sincere cooperation with our customers, seeking common development and jointly promoting the continuous innovation, development, benefit and return to society of the national temperature instrument industry.