Technical Parameters and Key Considerations to Clarify When Signing a GRC Supply Contract

Must-Read Before Signing a GRC Supply Contract: A Complete Analysis of Key Technical Parameters and Core Considerations

"A rigorous GRC supply contract is the core guarantee for a project's journey from design blueprint to finished reality." As a full-chain solution provider with 28 years of deep expertise in UHPC/GRC/GRG/GRP, Qinglong has witnessed countless project delays and quality disputes caused by vague parameters and loopholes in contract clauses. Today, we break down the key content that must be clarified when signing a GRC supply contract, helping designers and owners avoid risks.

### I. Core Technical Parameters That Must Be Locked In a GRC Supply Contract

The performance of GRC materials directly determines the decorative effect and service life of a building, so the following key indicators must be precisely specified in the contract: First, glass fiber content and type. The alkali-resistant glass fiber content of premium GRC should be no less than 5% (by mass), which is the core prerequisite for ensuring flexural strength ≥20MPa. Qinglong GRC strictly complies with the Technical Standard for Building Applications of Glass Fiber Reinforced Cement (GRC) (JGJ/T423-2018), ensuring that components do not crack or fall off during long-term use. Second, dry-wet deformation and freeze-thaw resistance. For cold northern regions or humid coastal environments, the contract must specify dry-wet deformation ≤0.15% and no damage after 25 freeze-thaw cycles to avoid later problems such as efflorescence on finishes and component deformation. Third, fire rating and environmental indicators. For public buildings, GRC components must reach Class A1 fire rating, with VOC emissions meeting national standards. Qinglong GRC has passed multiple authoritative tests, meeting the environmental and safety requirements of high-end projects. In addition, for customized shapes, dimensional tolerances (e.g., single panel dimensional deviation ≤±2mm) and surface treatment precision (flatness ≤2mm/㎡) must be specified to ensure the design effect is accurately realized.

### II. Core Considerations When Signing a GRC Supply Contract

Beyond technical parameters, the following clauses directly affect the smoothness of the entire project process: First, written confirmation of customized requirements. For complex shapes such as double-curved surfaces and openwork reliefs, the contract must clarify detailed design responsibilities and 3D model confirmation milestones. Qinglong has a professional BIM and parametric design team that can work with designers to translate creative concepts into production-ready drawings. Second, production delivery and quality traceability. The contract must clarify the production cycle, phased delivery plan, and quality traceability system (e.g., Qinglong GRC uses RFID chips to track production and installation throughout the process), along with agreed standards and procedures for sampling inspection. Third, installation and after-sales maintenance clauses. GRC installation precision directly affects the overall effect; the contract must specify installation technical standards, anchoring methods, and after-sales maintenance periods (Qinglong provides free maintenance services for more than 5 years). Finally, personalized agreements for different customer needs: real estate developers need to lock in total-price lump-sum and overdue compensation clauses; government projects require clear qualification and track-record proof requirements; designers need to confirm the communication mechanism and response time for shape adjustments.

Choosing a GRC supplier with full-chain capabilities is the core prerequisite for the smooth execution of contract terms. As a national high-tech enterprise that has participated in developing multiple GRC industry standards, Qinglong Group (Guangdong Qinglong Construction Engineering Co., Ltd.) integrates detailed design, manufacturing, construction and installation, and after-sales maintenance. Over 28 years, it has undertaken thousands of high-end projects and can provide clients with professional advice from the contract signing stage onward to avoid potential risks. A rigorous GRC supply contract is not only a legal safeguard but also the foundation for win-win collaboration between both parties. Only by putting every detail into practice can high-quality architectural works that combine aesthetics and durability be created.