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Established in 1980, Shanghai Zhongchangjiang Telecommunication Technology is a branch company of Wenzhou Changjiang Automobile Electrical Appliance, which is a joint stock enterprise integrated in the R&D, production and sale of electrical appliances for the automobile industry. Changjiang covers an area of 80,000 square meters and houses over 3,000 workers. These resources allow us to enjoy a high reputation in the world and a production value of $96 million annually.

Our company covers an area of 40,000 square meters and is located in Hangdu Road, Pudong New District. Our radiation-free earphones are designed with special acoustic channel technology and can prevent the mobile phone radiation and avoid the risk of brain cancer.

As a testament to our hard work and dedication to innovation, we have got invention patents in Germany, Australia and China, as well as the PCT certificate. Currently, our products are exported to the US, Australia, Singapore, South Korea and other areas worldwide. Contact us today to know more.