ChaoZhou Three-circle (Group) Co., Ltd. was founded in 1970 and listed on Shenzhen Stock Exchange in 2014 (stock code: 300408). The group has set up subsidiaries in Shenzhen, Chengdu, Nanchong, Deyang, Suzhou, Wuhan, Hong Kong, Germany, Thailand and other places. Three-circle is a comprehensive enterprise dedicated to researching, developing and selling basic electronic materials, electronic components, communication equipment, etc. Over the past half century, the company has been adhering to the vision of "'Materials Plus' Builds Better Life", focusing on the "material" gene, and taking "material + structure + function" as its development direction. Three-circle's products cover electronics, new energy, communications, semiconductors, mobile smart terminals and many other application fields. Among all these products, the production and sales volume of our optical fiber ceramic inserts, alumina ceramic substrates, ceramic substrates for resistors, etc. are one of the best sells in the world. The company has been named as national high-tech enterprise, national technological innovation demonstration enterprise, national enterprise technology center, and individual champion demonstration enterprise in China's manufacturing industry, and has been rated as one of the top 100 Chinese electronic components enterprises for many years. CCTC has always practiced the corporate values of "Integrity and Diligence, Scientific and Technological Innovation, Foster Talents, Openness and Integration, Steady and Long-term Development, and Pursuit of Excellence", and is committed to providing solutions for customer needs, building a development platform for employee growth, creating investment opportunities for shareholders, and contributing corporate values to social development.