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Need to measure the height of the covering or brick，determine the reserved depth to ensure that the manhole cover is flush with the road surface when the installation is completed. Clean the dirt on the frame seating. Lay sealing concrete onto the seating area, thickness on less than 40mm. If the base floor is brick, it should be moistened with water in advance... Read More
Its main products include composite manhole covers, water meter, power and gas industry meter boxes , Drainage grate, customized composite products and SMC materials.