safety cured in place sewer lining cipp technology Non excavation liner
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...liner of high strength and quality for UV trenchless curing sewers Classification: The first method is preventive repair and salvage repair according to the priority of repair time. Preventive repair: a city needs to reasonably plan and manage the underground pipelines and these fixed assets, including the laying year, main pipe......
Daoyunai Energy Saving Technology Limited
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