Low-price chaos is frequent in the engineered quartz stone market. Some manufacturers simplify raw materials and reduce processes, leading to slab color penetration, cracking, and rough texture. Guangdong Shilifang New Material Technology Co., Ltd. adheres to its high-end quality positioning and has established a full-process standardized quality control system from raw materials to finished product delivery. Every quartz stone slab undergoes multiple strict inspections to hold the product quality bottom line. Shilifang's quality control system is divided into four core links: raw material selection control, production process inspection, finished product physical performance testing, and appearance texture manual re-inspection. At the raw material stage, all quartz sand, resin, and mineral pigments must be sent for inspection before warehousing, eliminating raw materials with excessive heavy metals and impurities, and only high-purity quartz crystals are selected to avoid radiation and stain penetration risks at the source. Samples of each raw material batch are retained for full traceability, allowing precise positioning of raw material batches when quality problems occur.

Three inspection checkpoints are set in the production process: checking particle distribution uniformity after automatic material distribution, testing slab density after high-pressure pressing, and monitoring soft-gloss/mirror glossiness in real time during the polishing process. Workshop quality inspectors sample every hour, and digital equipment records production parameters synchronously. If parameters deviate from standards, the machine stops immediately for adjustment, preventing batch defects. After finished products come off the line, slabs are uniformly sent to the professional testing laboratory for a full set of physical performance tests: water absorption testing, wear and scratch testing, high temperature discoloration testing, acid and alkali corrosion testing, and bending and compression strength testing. Only slabs with all indicators meeting standards can enter the finished product warehouse. For home decoration soft-gloss series, additional glossiness special testing is added to ensure the soft-gloss surface is gentle and non-glaring. At the appearance level, workers manually inspect each slab for grain, black spots, pores, and chipping one by one. Slabs with minor defects are directly reworked and never flow to the market after patching. For large-scale engineering orders, Shilifang additionally implements batch same-color comparison testing to ensure consistent texture and color difference of shipped slabs for the same project, avoiding obvious color differences in whole-house paving and ensuring the overall effect of engineering projects.

Strict quality control brings a lower after-sales rate. Compared with ordinary industry products, after-sales complaints about cracking and stain penetration of Shilifang quartz stone have dropped by 80%. The company's relevant management stated that quality is the foundation of long-term brand development. In the future, it will continue to upgrade testing equipment, refine quality control standards, and export standardized quality control processes to partner processing plants, promoting the standardized development of industry quality.