The natural surface of black quartz is rolling. The product attributes are as follows 1. Color: black, black and gray. 2. Specification: diameter =15-40cm. 3. Thickness: 2-3cm or customized according to customer requirements. 4. Weight parameters: 18-20m2 / ton. 5. Supporting products: corner stone for wall corner. 6. Application scope: high-end residential areas, villas, clubs, hot spring hotels, resorts, beautiful countryside construction, etc. 7. Sales line: mobile phone WeChat and the same number +8615132950888.