The world's first worth mentioning pvc doors plastic door and window in 1959 in the Federal Republic of Germany has experienced since the advent of half a century, this synthetic material pvc doors doors and Windows of the raw material to its excellent mechanical properties, good weather (UV) performance, flame resistance, light weight, long life, making installation easy, low-maintenance, as well as cheap, and other characteristics, in developed countries have made considerable progress. Domestic pvc doors profile window and door industry also experienced a 30 years of development, from the import period, high-speed development period, now entered into a transition. 

    China in the early 1980s, when some plastics processing manufacturers from abroad twin-screw extrusion machine, to the 1980s gradually formed 200 lines, about the ability of the industry, 100kt but, because the social environment, economic and policy conditions and other reasons, the entire pvc doors plastic door and window industry and could not form a valid market. In the 80 's-90 's, with twin screw extrusion machines of domestic production and vibrant rural enterprise development, plastic profile also has a number of development, however, increase in production capacity and market saturation of contradictions, price competitive, manufacturers in the common pursuit of low cost, simplified profile section, formula with a substantial population of calcium carbonate, leading product performance is low, the prevalence of poor quality products, so that just the start of plastic profile and door and window industry once again. In 1994, by the Ministry of construction, chemical industry, light industry, bolai was and China Petrochemical Corporation 5 jointly organized the national chemical building materials coordination leading group "to develop and publish a relevant developing chemical building materials, planning, policies and norms; and June 1997, issued" on the accelerated application chemical building materials and restrictions, backward products ", strongly promoted the pvc doors plastic door and window industry.

    At this point, a batch of strong enterprises, begin the digestion and absorption of foreign European extrusion technology essence, developed its own window and door series, becoming the leading plastic doors and Windows, promote technical updates and the Windows and doors, also make the entire industry has been unprecedented development and growth. After 2003, products marketting, pvc doors profile industry entered a transitional period. That is, since 2003, the high profit margins are causing excessive blind investment, many drawbacks to begin. pvc doors doors and Windows product quality levels, inferior products still have a larger market; at the same time, industry technical standards is too low, is not conducive to technological progress, the lead alloy materials. More fierce market competition.

    Countries in the "11th five-year plan that clearly put forward to make the country more than 20% less energy. According to published survey data indicated that, at present, China's energy consumption accounted for 40% of the total energy consumption, all types of energy, including energy consumption through the door and window damage amounted to 46% higher. So the energy efficiency of buildings to reduce energy consumption has become an important measure for more was concerned, but also contribute to the domestic plastic door and window industry one of the high speed development of power. At the national "energy saving and emission reduction" policy support, in 2007, the domestic market demand for applications up to more than the actual yield 4300kt about capacity of 1/2 (with some lemon 2000kt), exports nearly 100kt, annual consumption of more than about 3500kt pvc doors resin, pvc doors resin in China accounted for about 40 per cent of total production.

    By the end of 2008 has profile production line in China more than 10000, productivity over production enterprise 8000kt exceeds 10000 home. 2008 China plastic Windows and doors in the cities and towns in new housing market share has reached more than 50%, while plastic doors and Windows security, environmental protection energy conservation as well and attention.

    On the one hand, the rapid development of industry, on the one hand and face up-market dominated by foreign brand, the lower door and window market is highly competitive, uneconomic. In this situation, the lifting industry technology level, emphasis on industrial safety and environmental issues is very important.
Article source: China National building material NET