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Coshine stone is granite and quartz surfacing manufacturer, We are one of the largest suppliers of engineered stone in China. A mixture of 93% pure quartz and 7% resin Quartz Master's high-quality slabs are the largest in the industry 120x64 inch,big slabs is 129x75 inch and are available in over 100 colors and patterns. Engineered quartz stone is often preferred over marble stone, because it requires less maintenance and has better resistance to stains and bacterial contamination. Backed by a lifetime residential warranty and 10 years on commercial projects.