quartz and crystals In Xiamen Aofei Building Materials Co.,Ltd. , we do great effort to give the quartz and crystals the highest quality in the industry. We have established a scientific materials evaluation and selection system to ensure that only the finest and safe materials are used in the product. Our professional QC experts will carefully monitor the product quality in each stage of production by using the most efficient inspection methods. We guarantee that the product is always zero-defect.
AOFEI quartz and crystals When manufacturing quartz and crystals, Xiamen Aofei Building Materials Co.,Ltd. puts emphasis on the quality control. We let our quality control inspectors protect the customers from defective products and the company from damage to our reputation due to inferior manufacturing processes. If the testing process reveals problems with the product, the inspectors will immediately solve them and make records, thus improve the efficiency of the product.gold in quartz rock value,quartz deposits,black quartz with white veins.