Qinglong waterproof is a well-known brand in the waterproof industry, and its products are very cost-effective waterproof products in the market. Founded in 1997, it is a large-scale comprehensive professional manufacturer of building materials in China. It is a high-tech enterprise integrating R&D, design, production, sales and construction in the building waterproof industry. Its products cover waterproof coiled materials, waterproof coatings, rigid waterproof materials, sealing materials, building reinforcement materials, thermal insulation materials and dry-mixed mortar. The product range is complete, and it is one of the few waterproof enterprises with complete varieties of waterproof materials in China. If my answer can help you, please give me a big compliment.