Chaozhou Sanhuan (Group) Co., LTD., founded in 1970 and listed in Shenzhen Stock Exchange in 2014 (stock code: 300408), is a comprehensive enterprise committed to research and development, production and sales of electronic basic materials, electronic components, communication devices and other products. The company's products cover many application fields such as optical communication, electronics, electricians, machinery, energy conservation and environmental protection, new energy and fashion, among which the production and sales of ceramic inserts for optical fiber connectors, alumina ceramic substrates and ceramic substrates for resistors are among the top in the world. The company has been rated as national high-tech enterprise, China manufacturing single champion demonstration enterprise, and has been ranked among the top ten of China's top 100 electronic components for many consecutive years. Tri-ring group always adhere to technological innovation as the leading, set up the design institute of materials research institute and equipment, have to academicians, subject experts as a consultant, Dr. For technology innovation research team leader, continuously develop new materials, new products, new equipment, new technology research and innovation, many times to undertake and complete the national, provincial key scientific research project, A number of products have won the national high quality product gold award, product patents cover many countries and regions.