wall saw 1.Laser welding . 2.Cutting for granite, marble, concrete,ect. 3.Sharp and high efficiency 4.Scrap holes wall saw ◊ Product description:1. Using laser welding technology , professional and sharp cutting ,so that it's higher efficiency.2. Cutting for various kinds of stone materials, such as granite, marble, concrete, asphalt, sandstone, brick , limestone and so on.3. Steel body with many ...