Injection pvc pipe price | Sea Widex (certified) | pvc pipe injection provided by Qingdao Rubber Material Co. Widex. Widex Qingdao Rubber Material Co., Ltd. (www.haihuidaxiangsu.com) is specialized in "PVC profiles, seals, ABS extrusion profiles, PVC raw material" of the enterprise, the company of "honesty, hard service" concept, for You provide the most quality products and services. Welcome to inquire! Contact: Zhao Shuang. There are also more than the number of production companies (nearly 400) pvc injection pipe products, miscarriage can yield large (2.8 million tons), a small demand (2003 sales of 1.2 million tons country profiles) PVC profile industry's status quo within the industry, production capacity contradictions can not play, the annual output of more than 20,000 tons of business less than 10, the level of product quality is uneven, inferior products still have a market, quality and technology industry standard is too low, is not conducive to technological progress, leading to substitute aluminum comeback . The high-end market (30%) were occupied by foreign brands, middle and low market unprofitable, intense competition, the final pattern has not yet formed. From the factory distribution, at 392 profiles manufacturers in the southeast region of 37%, 12%, Shandong, the central region of 17%, 19% in the Northeast, 15 percent in the western region. From the point of view of production capacity Division 2003 National capacity 2.8 million tons, Shandong Province 9% pvc injection pipe supply, the central region of injection 1% pvc pipe, the Northeast 32 percent, 7 percent in the western region, the southeast region of 39%. 1914 found that organic peroxides can accelerate the polymerization of vinyl chloride, 1931 German law the company uses to achieve industrial production of polyvinyl chloride emulsion polymerization. 1933 WL Simon proposed using high-boiling solvents and tricresyl heated and mixed with PVC, can be processed into a soft PVC products, this makes practical use of PVC has been a real breakthrough. British Imperial Chemical Industries Company, Union Carbide Corporation and Goodrich Chemical Company has developed almost simultaneously suspension polymerization of vinyl chloride and PVC processing applications in 1936. In order to simplify the production process, reduce energy consumption, in 1956 the French Shengge Bang has developed a bulk polymerization. In 1983, total world consumption of about 11.1Mt, the total production capacity of approximately 17.6Mt; polyethylene production is second only to the second largest variety of plastic injection molding pvc pipe manufacturers, accounting for about 15% of the total output of plastic. PVC production plant in China's self-designed 1956 trial production in Liaoning Jinxi Chemical Plant, 1958 3kt device formal industrial production, 1984 annual 530.9kt.