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230mm PVC Waterstop 10mm Thick Dumbbell PVC Waterstop Strip. Superior Chemical Resistance: Offers superior acid and alkali resistance compared to ordinary rubber materials. High Cost Performance: Economical pricing provides excellent value for waterproofing concrete structures. Easy Heat Fusion Welding: Ensures reliable joint strength through simple heat fusion welding process. Dimensional Stability: Minimal thermal deformation and no warping under varying temperatures.