D400 900x600 manhole cover with frame.hinge and lock.material:ductile iron .out size:1050x 750 cover size:900x600 height:100 class:D400
D400 900x600 manhole cover with frame.hinge and lock.material:ductile iron .out size:1050x 750 cover size:900x600 height:100 class:D400
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Under the premise of ensuring the flatness, the manhole cover is integrated into the pavement and the road to achieve the effect of beautifying the city.
