... Black mirror 1. Product information ProductsQuartz stone, engineered quartz stone, quartz stone couter topColorStellar series, solid color series, granite ... metal scraps and other impurities containing in the quartz crystals, compositing the purified crystals with the polymeric ... scraping and thickness calibrating, finally comes out the Powerstone quartz stone. Zhongguanshi's Advantages: 1. We are the ...