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Product Description 1. Make sure the construction surface is dry. 2. There should be no impurities on the construction surface, which will affect the viscosity of the tape. 3. The tape is too narrow to affect the waterproof effect. 4. Can not be used on the back of the water, will fall off. 5. Roof waterproofing to find the leak point, responsible for no effect. 【Operation steps】 1.Clean the pasting surface before construction to ensure there is no dust and loose structure 2.Cut the appropriate length according to the actual area and lay it flat. 3.Gradually tear off the adhesive isolation film and press while tearing to make it fit flat. 4.Press it repeatedly to compact it so that there is no air inside and it fits tightly.