1. Thai porcelain stone a new test particle surface of metal roofing tiles, gravel gold tile. 新型考瓷泰石颗粒面金属屋面瓦，砾金瓦。
2. Mixed asphalt and crushed stone gravel or sand, used for paving or roofing. 树脂，自然沥青某种自然的沥青，如矿石沥青或树脂。