Profile: Shenyang Longyuan Enterprise Group is a manufacturer of polyester mat and bitumen waterproof membranes. Our products include asphalt shingles, roof underlayments, waterproof sheets, self-adhesive membranes, and modified waterproof bitumen sheet materials. Asphalt shingle is a waterproof roofing material. This product can be used for concrete roofs and wood basements. The cement roofing is coated with adhesive mass to fix shingle. Waterproof sheet is used for road, ground, basement, toilet, subway, and roofing. Waterproof sheet covered with polyester on the upper surface is suitable for non-exterior exposure waterproof project. Waterproof sheet covered with ethane film and thin sand on the upper surface, is suitable for non-exterior exposure waterproof project.