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.

Currently, concrete technology is rapidly advancing towards high performance, low carbonization, intelligence, and multifunctionality. As the “skeleton” of modern architecture, concrete performance directly impacts the safety, durability, and entire lifecycle cost of engineering structures.
Concrete Impermeability
Concrete Mix Proportion (Mix Design)
Concrete Shrinkage Rate
Special Concrete
Impermeability Performance
Concrete Mix Proportion Design
Restrained Expansion Rate of Shrinkage-Compensating Concrete
Non-Sparking / Non-Incendive Property
Concrete Impermeability: GB/T 50082-2009
Concrete Mix Proportion (Mix Design): JGJ 55-2011
Concrete Shrinkage Rate: GB 50119-2013
Special Concrete (Fine Aggregate Non-Sparking Concrete): GB 50209-2010
1. Familiar with material mix design. We can arrange technical personnel to assist with R&D based on project requirements and provide training on key technical control points for construction parties, reducing quality risks caused by material issues.
2. Experienced in nuclear power project testing, capable of assisting with uncommon testing items as needed.
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