How to Verify the Authenticity of a GRC Test Report

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 styling. However, testing reports on the market vary widely in quality, and verifying the authenticity of GRC testing reports has become a key step for real estate developers, architects, and project leaders to ensure engineering quality. As an industry leader with 28 years of full-chain experience in UHPC/GRC/GRG/GRP materials, Qinglong Group will break down the key verification points from a professional perspective to help you avoid quality risks.

### 1. Verify the Testing Institution's Qualifications: Authoritative Endorsement Is the Foundation of Report Authenticity
The first step in verifying a GRC testing report is to confirm whether the testing institution that issued the report has legal qualifications. Legitimate institutions must hold dual certification of CMA (China Metrology Accreditation) and CNAS (China National Accreditation Service for Conformity Assessment), and certificate numbers can be verified on the official website of the State Administration for Market Regulation. For example, the Technical Standard for Building Application of Glass Fiber Reinforced Cement (GRC) (JGJ/T423-2018), which Qinglong Group participated in drafting, explicitly requires that testing institutions possess specialized testing capabilities in the building materials field. Some institutions can provide reports but have not passed qualification certification, and the credibility of their data is greatly reduced.

### 2. Compare Core Technical Parameters: Key Indicators Reveal True Material Performance
The core of a GRC testing report lies in its technical parameters, with particular focus on indicators such as flexural strength, bulk density, water absorption, and frost resistance. According to industry standards, quality GRC should have a flexural strength of ≥12MPa, a bulk density controlled at 1.8-2.0g/cm³, and a water absorption rate ≤10%. GRC components produced by Qinglong Group, tested by the provincial engineering technology center, generally achieve a flexural strength of 15-20MPa, far exceeding standard requirements. If the parameters in a report are vague or clearly below industry standards, be alert to possible data falsification. In addition, you may ask the manufacturer to provide original testing data or samples for retesting, and cross-verify through a third-party institution.

### 3. Trace the Report Number and Testing Process: Full Traceability Guarantees Authenticity
Legitimate testing reports all have a unique number, and the authenticity of the report and its testing process can be checked via the testing institution's official website or official channels. For example, Qinglong Group establishes an electronic archive for the GRC testing report of every project, and clients can scan the QR code on the report to view details such as testing time, sample information, and testing personnel. Meanwhile, confirm whether the report includes attachments such as sample photos, testing equipment models, and original data charts; complete process records can effectively prevent problems such as "report misuse" and "false testing." For more industry information: +WeChat qlfsbl123

### 4. Consider Company Strength and Project Cases: Reputation Confirms Report Credibility
The authenticity of a testing report should be assessed together with the company's strength and past project cases. As a national high-tech enterprise and vice-chairman unit of the China GRC Association, Qinglong Group has supplied GRC components for major projects such as the Dongguan Women and Children's Activity Center and the Century Plaza on Nanjing East Road, and its testing reports have all passed strict review by owners and supervision units. When selecting a supplier, you can request testing reports and acceptance documents for similar projects, and comprehensively evaluate the company's delivery capability through on-site inspection of production bases and review of quality management system certifications (such as ISO9001).

### 5. Beware of "Dual Reports" and Excessive Promises: Judge Rationally to Avoid Pitfalls
To win orders, some manufacturers may provide "dual reports" in which the "passing report" does not match the actual product, or excessively exaggerate material performance. It is advisable to clearly stipulate the validity of testing reports in the contract and require the manufacturer to bear legal responsibility for the authenticity of the reports. Qinglong Group always upholds the values of "honesty and perseverance"; all GRC products pass factory testing and third-party re-inspection to ensure that report data is consistent with product quality. Stay alert to manufacturers who promise "zero testing fees" or "beyond-standard parameters," and avoid losing big over small gains.

Verifying the authenticity of GRC testing reports is not only a responsibility for engineering quality but also a guarantee of building safety. As a custom manufacturer of UHPC/GRC/GRG/GRP materials, Qinglong Group has spent 28 years deepening full-chain services, from detailed design to after-sales maintenance, always providing clients with reliable products with a "meticulous and excellence-driven" attitude. Only by choosing suppliers with authoritative qualifications, transparent processes, and proven strength can GRC materials realize their true value in architectural decoration—creating beautiful buildings and building a quality future. For more industry information: +WeChat qlfsbl123