Historical Evolution of asphalt shingles late 1990s, and Dalian, China's Shanghai, China to the rise of the "flat slope" hot, almost all along the street had been turned into a flat roof sloping roof, the city a new look. Serves as the main slope roofing materials are asphalt shingles, its biggest feature is light weight, the color is greater. Asphalt shingles are fiberglass mat for the matrix, after dipping high-quality asphalt, no side cover color ore pellets, on the other hand spread sheets of roofing tile-like material made in isolation, and it has a good waterproof , decorative features and rich colors, forms, fine light surface, simple construction and so on. Asphalt shingle roofing material is a kind of decoration and waterproof function. In the US and Canada production and use of a large amount, mainly for residential and commercial buildings sloping roof. Also the production and use of asphalt shingles in Europe, but relatively small quantities. The mid-1980s, Tianjin, Wuhan, the introduction of a multi-functional modified bitumen membrane production line can also produce asphalt shingles, but the market did not expand. Twentieth century, Shanghai and other coastal cities, the promotion of "flat slope", colored asphalt shingle roofing materials become the first choice. This not only changed the urban landscape, but also to improve the drainage and roof insulation performance. In the market, a lot of black exhaust carcass production plant utilizing asphalt shingles, there has been a time of shabby, seriously affect the reputation of our plant these regular shingles, and in this, I strongly suggest that you pay attention to distinguish between good and bad asphalt shingles, By following points can help you accurately distinguish: 1: carcass: 100 grams of glass fiber are tires we use, can be used in 20-50 years, while the black polyester tire factory use, or compound tires are only 2-3 years. 2: sand: We use US imports 3M sand, high temperature 7200 ° grilled out, the color does not fade forever. Black plant dye used is sand, water easily fade. 3: asphalt glue: We use high-tech rubber modified asphalt, can do without breaking -20 °, 90 ° is not flowing, black plant used is the kind of low-grade asphalt glue, and even asphalt recycling of waste plastic can not adapt to changes in temperature, there has been time and again engineering problems, roofing whole piece has broken, the flow was Manqiang asphalt glue, too. Select Atrium Limited production of asphalt shingles is absolutely wise, so you no worries