Fall prevention: this manhole cover design for steel frame,bearing capacity is strong.
No recovery value and anti-theft: the plastic manhole cover use the no recycle value material and will solve the stolen problem thoroughly.
Well sealed: It can be used effectively prevent those poisonous gases leaking out from cesspool.
Strong anti-theft performance: Resin composite material SMC manhole cover is made of unsaturated resin, glass fiber and other materials and reinforced skeleton composited by special production process. After high temperature grinding and pressing, the material has no use value, and it is very difficult to remove the steel bar (Beyond the value of steel), so it has the function of active anti-theft.
