Alloy mesh bag by a single volume from the system. The mesh, wire mesh, galvanized and PVC coated the same attributes and cages. This product can be of various shapes and sizes of stone into the alloy to form a flexible net bag overall, through lifting, car, ship arrived at the designated place, the alloy net bag into a larger interconnected whole, cast construction vote when convenient, fast, efficient and economic performance. Features: corrosion strong, the overall flexibility and stability.