Criteria for identifying quartz stone
18759566040@139.com2021-04-26T07:34:26+00:001. Hardness: The surface has a Mohs hardness of 7. The simple detection method is to use an iron sharp object to squeeze to observe the damage point without scratches. 2. Density: 2.37-2.5 3. High-temperature resistance: 300℃. Place a stainless steel cup filled with boiling water on the countertop for 30 minutes, and the color