Anti-theft Drain Cover

Anti-theft drain cover, also called Rain BIZI, trench covers. This product will framework in civil engineering in casting concrete inside, when making a door shaft or welding hinge, convenient open, and it has good security ability. Apply to the municipal road, park garden, residential quarters, school institute, sports stadiums and other public places. It has many features,such as : displacement big and easy to open to clean sludge , after galvanizing the anticorrosion ability strong, beautiful and delicate ,easy.