PVC profile products experienced a period of rapid development and introduction period, from the time point of view, can be defined as the mid-1980s around -90 twentieth century and in 1995 - 2002. After 2003, PVC profile industry has entered a transition period. In the import of the product: Manufacturer common pursuit of low cost, simplified window profiles section, filled with a lot of calcium carbonate formulation, resulting in low performance pvc pipe production, a lot of quality problems affecting the promotion of the product. 1995, a number of strong companies, began to digest and absorb foreign technology essence of European profile, developed their own windows and doors, plastic doors and windows become dominant, promoting technological upgrading and development of doors and windows, but the entire industry has been unprecedented development and growth. pvc exports, from 1 to total exports PVC substantial increase of 152.4 percent in May from a year earlier. From the point of view pvc pipe flow lines, is India's largest export consumer market; the supply of Russian exports to the number of the slowdown pvc pipe prices, ranking second. In addition, since the outbreak of the financial crisis, the global market, the trading environment has undergone great change, national trade protectionism, trade frictions increased significantly for our enterprise products. From the early 1980s, the country to promote the use of upvc pipe, and developed a series of policies, systems, standards, and has accumulated a lot of experience. To today, already have a sound product standards, test method standards and testing methods, construction engineering and technical specifications, so as to unify the standard size and quality indicators, to achieve a product interchangeability. This shows that the development of pvc water supply pipe has entered a mature stage, the product quality and construction quality are guaranteed, thus ensuring the use of effects pvc water supply pipe. The water supply pipe pe international standard (ISO4427) was officially released until 1996. Our reference in 1999 to write the national standard ISO4427 GB / T13663 pvc pipe, and promulgated in 2000, but has standard pe pipe fittings, engineering and other technical specifications continues perfected. This shows that domestic pe pipe quality has not been stable, pipe fittings supporting not perfect, and therefore can not ensure the production, construction quality. pvc pipe Supply | Sea Widex (certified) | pvc pipe provided by Qingdao Rubber Material Co., Widex. Widex Qingdao Rubber Material Co., Ltd. (www.haihuidaxiangsu.com) is Qingdao, industrial products leader, over the years, the company is implementing the scientific management, innovation and development, the principle of honesty and trustworthiness, and satisfy customer needs. Widex leadership in the sea with the staff warmly welcome all inquiries negotiations to create sea Widex a better future.