variety: small, medium and heavy expanded metal mesh. expanded aluminum mesh, expanded platinum filtration mesh, expanded brass mesh, expanded copper mesh, expanded stainless steel mesh, expanded nickel mesh. opening in the shape of diamond, hexagonal or special shape. use: used with concrete in buildings and construction, maintenance of equipments, making of arts and crafts, covering screen for first class sound case. also fencing for super highway, studio, highway. heavy expanded metal can be used as step mesh of oil tanks, working platform, corridor and walking road for heavy model equipment, boiler, petroleum and mine well, automobile vehicles, big ships. also serve as reinforcing bar in construction, railway and bridges.