different materials, different effects and construction techniques will be different. 1, light steel keel marble dry hanging; 2. Wooden keel core board substrate and aluminum-plastic board cover; 3. Tile veneer; 4, dry hanging cement products, etc ... There are too many practices, which can be roughly divided into three types according to the structural construction technology: 1, light steel keel structure; 2. Wooden keel structure; 3. Mosaic structure.