... , high-intensitive, maintenance-free, pollution-free, environmentally-safe burglar mesh security window1.Material: Hot-dip Galvanized steel ,stainless steel ,aluminum alloy ... and self-cleaning 3. Features1. assembly burglar mesh, easy to install;2. stainless stell secure screw, anti-dismantle;3. colorful burglar ... to coating, all are brand products, ensure our products' quality security window