Long gap between the three wood approach: taking into account drainage, cleaning and minor thermal expansion, contraction and other reasons, wins dimensional profile installation, edge to edge, you must leave appropriate gap between the head to head. Edge to Edge: wins Dimensional Cutting edge to edge between the requirements of ≥4 mm: When installed in a cold climate, ≥4 mm clearance requirements. Head to head: the gap between wins dimensional profile head to head size depends on the length of the profiles, the temperature use wood floor installation, the thermal expansion coefficient profiles (ζ≈0.9 × 10-4), as well as local highest possible temperature. Head to head clearance calculation: For a L-meter-long sections, local highest possible temperature within one year Tmax, the temperature at installation is T, then install the root profile head should be kept gap Δ L = ζ × (Tmax? -T) × L. For example: a 2 m long profile, installation day temperature is 10 ℃, the hottest day of the year at 40 ℃ WPC specification, then install the root profile head should be kept gap: Δ L = ζ × (? Tmax- T) × L = 2000 × (40-10) × 0.9 × 10-4 = 5.4mm often have a customer sent a picture, you want this product; I was PE WPC manufacturers, photographs of products are PVC, so respond to customer said, "You look for PVC manufacturers do it, we do PVC's company"; Some customers just touch wood industry, do not know, will say, " What I want is to die wood wood floor, not PVC, you do not do the wood, how would not it? "In fact, wood industry is currently divided into two major categories of PE and PVC waterproof wood floor, the biggest difference is the PE Mainly used in outdoor, and PVC is mainly used indoors. It's like the same potato, shredded sour, it becomes a Vinegar potato silk, shredded fried, it becomes fries! WPC, WPC for short. Is wood, bamboo shavings, straw, bran, peanut shells, cotton primary biomass materials such as straw-based raw materials, the use of polymer plastic filled with modified principles and characteristics of the interface chemistry, compounding a certain proportion of the plastic base material, After the special treatment of a molding reversible recycling, shape structurally diverse base material. It maintains the look and feel of solid wood flooring, but also has good moisture-proof water, acid, fungistatic, anti-static, anti-moth properties, fire resistance and high wood products, pollution-free, it can be recycled. Chongqing wood flooring, building materials Chongqing three years (certification), Fengjie WPC provided by the Chongqing Municipal Building Materials Co. three years. Chongqing City for three Building Materials Co. (www.cqjsmsjc.com/) Chongqing Liangping County, building materials processing leader, over the years, the company implementing the scientific management, innovation and development, the principle of honesty and trustworthiness, and satisfy customer needs. In the three years leading building materials with the staff warmly welcome all inquiries negotiations to create long three building materials better future.