Shenzhen Circumferential Testing Technology Co., Ltd. Is headquartered in Longhua District of Shenzhen City, with a total floor area of more than 1000 square meters. Circumferential Testing is a comprehensive, professional and international third-party testing, inspection and verification service for industrial and consumer products. Its core technology comes from Emitel - AG, one of Germany's top five laboratories. Since its establishment, the company has been engaged in product safety, electromagnetic compatibility ( EMC ) testing and certification, chemical inspection and material analysis, RoHS inspection, reliability testing, standard research, product EMC design and countermeasures, national certification, ISO system guidance, skills training, etc. Now we have world-class testing equipment, professional testing team and skilled certification and coaching team. The company aims to do its best to support and add value to our customers, provide comprehensive testing and certification solutions, promote their success in the domestic and foreign markets, and enable them to market the world confidently.