4mm Asphalt Waterproof Membrane Sbs Modified Bitumen Roofing Roll for Swimming Pool. Flexible Customization: Supports full, minor, and flexible customization from samples or designs. Long Warranty: Provides a 30-year warranty for asphalt shingles products. Fast Rush Service: Offers rush order service with shipment within 7 days. Global Certifications: Holds ISO9001-2015, CE, ASTM, and SGS/BV reports. Professional Manufacturer: Large-scale enterprise with 5 advanced automatic production lines. Versatile Application: Suitable for outdoor and indoor use, including swimming pools. High Quality Standard: Implements ISO9001-2008 quality management system. Global Export Experience: Products exported to over 10 countries including Singapore and Africa.