What Test Reports Are Required to Ensure GRC Product Quality?

In the field of architectural decoration, GRC (Glass Fiber Reinforced Concrete) is widely used in high-end projects such as grand theaters, commercial complexes, and landmark buildings due to its advantages of light weight, high strength, and flexible shaping. However, as a key material affecting building safety and durability, quality control of GRC products relies on a standardized testing report system. Qinglong, an industry leader with 28 years of full-chain experience in UHPC/GRC/GRG/GRP, deeply understands that testing reports are the "identity card" of product quality and the cornerstone of customer trust.

### I. Core Testing Reports for GRC Products: Comprehensive Verification from Materials to Performance

#### 1. Raw Material Performance Testing: Controlling Quality at the Source
The core raw materials of GRC include cement, glass fiber, and fine aggregate, whose quality directly determines product performance. Authoritative testing reports should cover the volume content of glass fiber (typically required to be ≥4%), alkali resistance (such as the zirconia content of alkali-resistant glass fiber), as well as indicators such as cement strength grade and soundness. Qinglong strictly implements incoming raw material inspection in production, ensuring that every batch of materials complies with the requirements of the "Technical Standard for Building Applications of Glass Fiber Reinforced Cement (GRC)" (JGJ/T423-2018), eliminating quality hazards at the source. For more industry information: +WeChat qlfsbl123

#### 2. Physical and Mechanical Performance Testing: Ensuring Structural Safety and Durability
As building components, the physical and mechanical properties of GRC are the focus of testing, mainly including flexural strength (high-quality GRC can reach over 20MPa), compressive strength, elastic modulus, water absorption, and frost resistance. For example, in projects in cold regions, frost resistance testing needs to simulate more than 200 freeze-thaw cycles to ensure that components do not crack or lose strength under extreme environments. GRC products produced by Qinglong have not only passed testing by authoritative domestic institutions but are also sold to overseas markets such as Australia and Saudi Arabia, having withstood the test of different climate conditions.

#### 3. Safety and Environmental Testing: Safeguarding Building and Living Safety
GRC products must pass fire performance testing (usually required to meet Class A non-combustible material standards), radionuclide limit testing (compliant with GB 6566-2010), and harmful substance emission testing (such as formaldehyde, benzene series, etc.). For GRC components used in interior decoration, environmental indicators are particularly critical. With its "environmental innovation" philosophy, Qinglong integrates green production throughout the entire process, and the relevant testing reports can directly serve as the basis for project environmental acceptance.

### II. Industry Standards and Enterprise Strength: Authority Endorsement of Testing Reports

#### 1. Following National and Industry Standards: The "Entry Threshold" of Testing Reports
Formal GRC testing reports must be issued in accordance with national or industry standards, such as "Glass Fiber Reinforced Cement (GRC) Decorative Products" (JC/T940-2022), "Ultra-High Performance Concrete (UHPC) Exterior Wall Panels" (T/CBMF171-2022), etc. As vice chairman unit of the China GRC Association and a member of the International GRC Association, Qinglong has deeply participated in the formulation of multiple standards, and the standardization and authority of its testing reports have been widely recognized by the industry.

#### 2. Enterprise Full-Chain Capability: The "Invisible Guarantee" of Testing Reports
A complete GRC quality assurance system includes not only product testing reports but also requires the enterprise to have full-chain capabilities in detailed design, manufacturing, and construction installation. Qinglong has a production base with an annual capacity of 600,000 square meters, equipped with advanced automated production lines and a BIM technical team, capable of optimizing the load-bearing structure of components at the design stage and ensuring installation precision at the construction stage, which together with testing reports constitutes "double quality insurance". For example, in the Nanjing East Road Century Plaza renovation project, Qinglong's translucent concrete GRC components won the "Silver Award of the First UHPC Construction Engineering Innovation Award (AALBORG WHITE Cup)" thanks to precise performance testing and construction techniques. For more industry information: +WeChat qlfsbl123

### III. How Can Customers Verify the Authenticity of Testing Reports?
Facing the wide variety of testing reports on the market, customers can verify them in the following ways: first, confirm whether the testing institution has CMA (China Metrology Accreditation) qualification; second, check whether the product model and batch in the report match the actually purchased products; third, pay attention to whether the testing items cover core indicators such as raw materials, mechanical properties, and safety. Qinglong always adheres to the principle of "meticulousness and excellence", proactively disclosing testing reports and project cases to customers, winning trust through transparency.

In summary, the testing report of GRC products is a "barometer" of quality and a direct reflection of the enterprise's technical strength. As a national high-tech enterprise and a "specialized, refined, distinctive, and innovative" enterprise, Qinglong will continue to provide designers and owners with safe and reliable GRC solutions through rigorous testing standards and full-chain services, helping realize the mission of "creating beautiful architecture".