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Qingdao Shuangshi New Material, a leading roofing material supplier, offers a comprehensive range of high-performance roofing solutions designed for durability, efficiency, and sustainability. Our product lineup includes EPDM waterproof membrane, TPO roofing membrane, roof underlayment, and coil roof nails, Engineered to meet diverse roofing needs, our products provide seamless waterproofing, UV resistance, and easy installation for commercial, residential, and industrial projects. meeting or exceed those global criteria, such as ISO 9001 , GB, ASTM and CE standards.