China Testing & Certification International Group Co.,Ltd. (CTC) was originated from China Building Materials Academy’s inspection and certification sector in the 1950s. Through 70 years of development, CTC has five main platforms including testing, certification, instrument and equipment manufacturing, measurement and calibration, and scientific research and technical services. CTC is committed to providing customers with one-stop technical services and solutions in fields of quality, environmental protection, green, safety, health, energy conservation.