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Composite Resin Manhole Cover

Composite resin manhole cover is a manhole cover made of polymer composite materials, usually reinforced with glass fiber and its products, and made of synthetic resin as the matrix material.

Ductile Iron Manhole Cover

Ductile iron manhole cover is a common municipal facility made of ductile iron. Through spheroidization and inoculation treatment, graphite is distributed in a spherical shape, improving the mechanical properties of the cast iron.
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