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Tunnel semi-circular drainage pipe U-shaped spring semi-circular pipe

Which is the best spring drainage semi-circular pipe? Dezhou Xiangyao Geotechnical Materials Co., Ltd. offers discounted prices and guaranteed quality!

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Tunnel EVA waterproof board sling waterproof board

New material tunnel waterproof board, sling waterproof board

Green and environmentally friendly geotextile production for covering soil cloth

Polypropylene Grass proof Cloth Horticultural Herbal Grass proof Cloth

Production of hot melt gaskets for tunnels

Spring soft permeable pipe tunnel underground blind ditch pipe