Which GRC Manufacturer Has Good Product Quality? The Cornerstone of Quality and Qinglong Group's Comprehensive Quality Control System

The product quality of a GRC manufacturer is the cornerstone that determines the success or failure of a project and the lifespan of a building. Judging whether it is "good" must be based on an objective, quantifiable comprehensive standard of "performance indicators, process control, long-term verification, and system certification." Qinglong Group defines its internal product quality control standards as follows: in terms of material performance, flexural strength ≥12MPa, impact resistance (impact from a 1kg steel ball dropped from 1m height) with no penetrating cracks, water absorption ≤8%, and frost resistance grade ≥F100; in terms of process control, factory pass rate ≥99% and critical dimensional tolerance ≤±2mm; in terms of long-term verification, a 100% pass rate in follow-up visits to projects completed more than 10 years ago. In national-level projects such as the Hainan International Convention and Exhibition Center and the Wuhan Han Show Theater, our GRC products have withstood harsh environments and the test of time with stable performance—the most compelling proof of "good quality." Quality is not achieved through testing, but through design, manufacturing, and management.

Strict Raw Material Entry Standards and Quality Control Safeguard Quality at the Source

Quality products begin with quality raw materials. Qinglong Group maintains internal control standards stricter than national standards for the alkali content of cement, the zirconium dioxide content of alkali-resistant glass fiber (ZrO₂≥16%), the chloride ion content of aggregates, and more. We have established a comprehensive supplier management system, and every batch of raw materials entering the factory must be tested by a CNAS laboratory to eliminate quality risks at the source. This is the fundamental prerequisite for achieving high performance and high durability in our products.

Fully Automated Standardized Production Processes Are the Core Element

We have introduced fully automated mixing and spraying production lines, with a central control system precisely regulating the mix ratio, mixing time, and fiber content and distribution. Temperature, humidity, and curing regimes during production strictly follow operating standards. Compared with handcraft workshop-style production that relies on workers' experience, automated production ensures a high degree of uniformity and stability in product performance, eliminating quality fluctuations between batches.

Quality Testing and Traceability Throughout the Entire Process

From raw materials and intermediate products to final finished products, we have established more than 200 quality control points. Every component leaving the factory carries a unique identification code, with key performance data (such as strength and dimensions) recorded in the system to enable quality traceability across the entire life cycle. We regularly send products to national authoritative testing institutions for type testing and provide CMA/CNAS-certified test reports, using third-party data to verify quality.

Long-Term Engineering Proof Is the Ultimate Test of Quality

"Good quality" ultimately needs to stand the test of time. We maintain long-term tracking records for completed projects and conduct regular follow-up visits. Projects in coastal, severely cold, acid rain, and other climate zones, after 5, 10, or even more years, provide the most authentic quality feedback through their appearance retention and performance stability, driving our continuous improvement. The roofs of our Hainan project remaining leak-free for ten years is a silent tribute to our product quality.

Therefore, when evaluating the product quality of a GRC manufacturer, you cannot rely solely on promises—you must examine its quality control system, testing data, and long-term engineering cases. Through meticulous management across the entire process and a relentless pursuit of excellence, Qinglong Group ensures that every product delivered can withstand the most rigorous inspection.