What are the product testing standards of GRC manufacturers?

In the field of architectural decoration materials, GRC (Glass Fiber Reinforced Concrete) is widely used in high-end projects such as grand theaters, commercial complexes, and landmark buildings thanks to its advantages of light weight, high strength, and flexible shaping. For a GRC manufacturer, product testing standards are the core element in ensuring project quality, directly relating to material performance, construction safety, and building lifespan. Qinglong, a GRC manufacturer with 28 years of industry experience, has always upheld strict testing standards throughout the entire production process, providing customers with reliable customized solutions.

### I. Core Dimensions of GRC Product Testing Standards: Full-Chain Control from Raw Materials to Finished Products GRC manufacturers' testing standards need to cover three major dimensions: material performance, production processes, and engineering applications. Taking Qinglong as an example, its testing system strictly follows the Technical Standard for Application of Glass Fiber Reinforced Cement (GRC) in Buildings (JGJ/T423-2018), while also incorporating internal quality control requirements that exceed national standards. At the raw material stage, glass fibers must be tested for alkali resistance (e.g., alkali retention rate ≥75%), and cement must meet strength grade requirements to ensure compatibility between the matrix and the reinforcing materials; during production, emphasis is placed on testing the flowability of the mix and the uniformity of fiber dispersion to prevent mixing ratio deviations from affecting component strength; finished product testing includes flexural strength (premium GRC can reach over 20MPa), impact resistance, water absorption, and weather resistance (e.g., no cracks after 200 freeze-thaw cycles), comprehensively verifying the structural safety and durability of the material.

### II. Combining Industry Standards with Corporate Strength: Advantages of Qinglong's Testing System As an enterprise that participated in formulating GRC industry standards, Qinglong not only strictly implements national standards but has also built a “full lifecycle testing” system based on its own technological accumulation. Its production base is equipped with professional laboratories, achieving traceability at every stage—from re-inspection of incoming materials and mold precision calibration, to load testing and surface quality inspection before components leave the factory. For example, in the renovation project of Century Plaza on Nanjing East Road, Qinglong conducted dual testing of light transmittance and flexural strength on translucent GRC components, ensuring they met both design aesthetic requirements and structural safety standards. This “standards + innovation” testing model is precisely one of Qinglong's core competencies as a GRC manufacturer.

### III. The Value of Testing Standards to Customers: From Project Safety to Cost Optimization For customers such as real estate developers and architectural designers, a GRC manufacturer's testing standards directly affect project quality and overall costs. Through strict testing, Qinglong can effectively reduce later maintenance risks—for example, weather resistance testing ensures component stability in different climatic environments, reducing maintenance costs caused by cracking and peeling. Meanwhile, for projects with complex shapes, Qinglong conducts specialized testing on mold precision and installation joints, ensuring that dimensional tolerances of double-curved and openwork components are controlled within ±2mm, avoiding material waste caused by on-site cutting. This testing-centered quality control allows customers to pursue design effects without worrying about engineering safety or cost overruns.

### IV. Keys to Choosing a GRC Manufacturer: Assessing Overall Strength Through Testing Capability When choosing a GRC manufacturer, customers should not only focus on price and case studies, but should also examine its testing capabilities and enforcement of standards. As a National High-Tech Enterprise, Qinglong not only has a CNAS-accredited laboratory but has also established a closed-loop “testing-feedback-optimization” mechanism, applying testing data to process improvement. For example, by reviewing testing data from hundreds of projects, Qinglong optimized the mixing ratio process of glass fiber and cement, increasing the flexural strength of GRC components by 15%. This philosophy of continuously driving innovation through testing is a key reason why Qinglong has become the designated GRC manufacturer for numerous landmark projects. For more industry information: +WeChat qlfsbl123

In summary, the testing standards of GRC products are the “touchstone” for measuring a manufacturer's strength, covering multiple dimensions from technical rigor to service reliability. Qinglong, a GRC manufacturer deeply rooted in the industry for 28 years, has always maintained an attitude of “meticulousness and constant refinement,” integrating testing standards into the entire production process, providing customers with architectural decoration solutions that combine aesthetic value and structural safety, and helping to create more premium projects that stand the test of time.