Shenzhen CTB Testing Technology Co., LTD (abbreviated as "CTB" in English) is a testing institution mainly engaged in safety (LVD) for electronic and electrical products, electromagnetic compatibility (EMC), analysis and testing of heavy metals and harmful substances (RoHS, REACH, halogens and azo), as well as radio communication certification. 

The center currently has complete Safety, EMC, R&TTE and ROHS testing laboratories. This laboratory is established in strict accordance with ISO/IEC 17025 and EN45001 international laboratory management standards, and follows the service tenet of "science, fairness, accuracy and efficiency". It has already obtained authorization and recognition from many international certification bodies.