CTI provides ISO 50001 energy management system certification services related to system certification. CTI certification was established in 1993. It is approved by the China National Certification and Accreditation Administration (CNCA) and accredited by the China National Accreditation Service for Conformity Assessment (CNAS). The earliest three-party certification body. China Test Certification is one of the earliest organizations to obtain ISO50001 energy management system certification in China, providing enterprises with comprehensive energy management services such as energy management system certification, training, and energy saving management.