China Testing & Certification International Group Co., Ltd. (CTC, Stock Code 603060) originated from the testing and certification business of China Building Materials Academy in the 1950s. After 70 years of unremitting efforts and persistent pursuit, the company has formed five business categories: detection and testing, certification and evaluation, testing instruments and intelligent manufacturing, measurement and calibration, scientific research and technical services, committed to providing customers with technical services and comprehensive solutions of detection and testing, certification and evaluation, appraisal, consultation, training, and instruments and equipment in fields of quality, environmental protection, green, safety, health, and energy conservation.

Porcelain Tile Compulsory Product Certification (CCC Certification) is a market access system established by the state to control radionuclide limits, primarily applicable to porcelain floor tiles with a water absorption rate not exceeding 0.5%.
Scope of Application:
Porcelain tiles with a water absorption rate ≤ 0.5% must be tested for radioactivity in accordance with the GB 6566 standard.
Category and Mark:
Certification code 2102, divided into Class A (unrestricted use) and Class B (restricted use). Certified products must bear the CCC mark.
Certification Mode:
Initial factory inspection + product testing + post-certification supervision. The certificate is valid for 5 years.
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