Development history of PVC profiles in my country

       PVC profile products have experienced an introduction period and a rapid development period. In terms of time, they can be defined as the 1980s-mid-1990s and 1995-2002 respectively. After 2003, the PVC profile industry entered a transitional period. During the product introduction period: Manufacturers generally pursue low cost, simplify the section of door and window profiles, and fill in a large amount of calcium carbonate in the formula, resulting in low product performance, and many quality problems have affected the promotion of products.

Beginning in 1995, a group of powerful companies began to digest and absorb the technical essence of foreign European-style profiles, developed their own series of doors and windows, and became the leading domestic plastic doors and windows. They promoted the technological update and development of doors and windows, and made the entire industry unprecedented Development and rapid growth. After entering the product maturity period, that is, from 2003, many drawbacks began to be reflected. Excessive profit margins led to excessive blind investment, making the industry's comprehensive production capacity nearly 3 million tons, far higher than market demand; many new investments Instead of starting with product innovation and technological innovation, they simply imitate, even cut corners, fake and inferior products, and the industry market competition is in an unhealthy state. The rising prices of raw materials in the market have intensified this unhealthy competition, and put some companies in a difficult situation in their operations, resulting in suspension or semi-stop production.

       Current status of PVC profile industry

There are also contradictions in this industry that there are a large number of production enterprises (nearly 400), small output and large production capacity (2.8 million tons), and small demand (1.2 million tons of profile sales in 2003). The production capacity cannot be fully utilized. The annual output exceeds There are less than 10 enterprises with a capacity of 20,000 tons, the product quality level is uneven, there is still a market for inferior products, and the industry's quality and technical standards are too low, which is not conducive to technological progress, leading to a comeback of alternative aluminum materials. The high-end market (30%) is occupied by foreign brands, and the mid-to-low-end market is unprofitable and highly competitive, and the final pattern has not yet formed.

In terms of factory distribution, among the 392 profile manufacturers, 37% are in the Southeast, 12% in Shandong, 17% in the central region, 19% in the northeast, and 15% in the western region. From the perspective of production capacity, the national production capacity in 2003 was 2.8 million tons, 9% in Shandong, 1% in central, 32% in northeast, 7% in western, and 39% in southeast.

      Prospects for the development of PVC profiles

During the "Ninth Five-Year Plan" period, China achieved an average annual economic growth rate of 8%. In the recommendations of the "Tenth Five-Year Plan", it was clearly pointed out that further strengthening of infrastructure construction and the implementation of urbanization strategies have provided broad opportunities for the development of the national building materials industry. Space.

      Current status of PVC pipe industry

As one of the products of technological development, PVC pipes can be seen in daily life. In Europe, the growth rate of plastic pipes from 1980 to 1990 was 8%. In 2001, the output reached 3.5 million tons, of which PVC pipes accounted for 60%. In the United States, the output of plastic pipes in 1985 was 1.6 million tons, and the output in 1999 was about 3.6 million tons, of which PVC pipes accounted for 78%. China's UPVV flared pipes were born in Shenyang Plastic Factory (now the predecessor of Shenyang Jiuli) in 1983. Since then, mainland China has the production capacity of PVC water supply and drainage pipes. The late 1990s was a period of rapid development of PVC pipelines in mainland China. During this period, some factories with an annual capacity of more than 50,000 tons were built and put into production one after another, and more than 30 PVC pipe factories with a production scale of more than 10,000 tons. The annual production capacity of plastic pipes as of 2013 was 2 million tons.

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