Introduction cementitious capillary crystalline (3) cementitious capillary crystalline waterproofing materials are made of Portland cement, quartz sand, specialty chemicals and other components of the active waterproof material. Under the guidance of polyurethane waterproof coating manufacturers of water, with water as the carrier, with a strong penetration of polyurethane waterproof coating wholesale transmission in the concrete pores and capillaries, filling, physical and chemical reactions take place to form a water-insoluble dendrite-like crystals , and the crystal structure was integrated into the concrete waterproofing layer integrally closed to intercept the water flow from any direction and other directions and other liquids erosion. The newly revised "roof engineering and technical specifications" has expanded its range of all kinds of waterproof material selection, and to create the conditions for the application of polyurethane waterproof coating new waterproof materials, ease of design staff in the formulation of the waterproof design considering a combination of technical and economic polyurethane waterproof coating ingredients that meet the age requirements and durable waterproof layer of waterproof material on the relationship between selected according to quality should grasp the principle of competitive prices. Use waterproof material should be considered to ensure the durability of more than 10 years. According to the stiffness of the situation and the extent of exposure to the roof structure of the roofing materials should be selected UV-resistant, heat-aging resistance and good retention rotten performance, and the ability to withstand stress grassroots level, temperature deformation without cracks and fracture membrane. Polyurethane waterproof coating usage, long a source of waterproof material, Heilongjiang polyurethane waterproof coating Ltd. Weifang City for the source provided by waterproof material. Weifang City for the source of waterproof material Ltd. (www.jiuyuanfangshui.com) Shandong Weifang, waterproof, moisture-proof materials, leaders, over the years, the company is implementing the scientific management, innovation and development, the principle of honesty and trustworthiness, and satisfy customer needs. In the long leading source of waterproof material with the staff warmly welcome all inquiries negotiations to create long waterproof material source a better future.