In Europe and the United States, especially Europe, since the late 1980s, early 90s have been popular application of this superior performance waterproof material, its market share of more than 40%, and most of the PET spunbond method of fetal base. China's application of polyester felt base started relatively late, by 2000 the amount of but 20 million m2. However, new waterproof material has been developed rapidly since entering the new century. By 2002, the application of modified bitumen waterproofing membrane based on PET fiber reached 70 million m2 and continued to grow. It is predicted that in the future, the modified bitumen membrane will still develop at a relatively high speed and the proportion of the total volume of the bitumen membrane will increase to over 20% by 2010. The potential market for new waterproofing materials in our country is very large (about 8-10 billion m2). With the continuous deepening of economic construction in our country, the PET spunbond method felt has optimistic prospects.

Geotechnical materials
The overseas application of geotextiles began as early as the 1960s. The United States is the country that consumes the largest amount of geotextiles in the world. In the early 1990s, the United States used more than 300 million m2 of it annually. In recent years, it has reached 700 million m2 . Europe and Japan have also been the rapid development of geotextiles, geotextiles in Europe in recent years, the annual consumption of about 400 million m2, of which non-woven spunbond nonwoven fabric accounted for about 60% of non-woven geotextiles; Japan in the mid-90s Geotextile after the application of significant growth. Japan's largest non-woven geotextile spunbond method, accounting for about 60% of the total non-woven geotextile, and mainly PET spunbond.

China's geotextiles started in the early 1980s, but at the time the use of very small, just experimental application. It was not until 1998 that the floods aroused the attention of the government. The construction department put the application of geotextiles into the design codes and formulated relevant national standards so that the geotextiles really got the attention and development. At present, the amount of geotextile used in our country has exceeded 300 million m2, and the proportion of non-woven geotextile accounts for 40% of the total. China's civil engineering construction has a huge potential market, its potential must not be lower than the current US volume of 7 to 800 million m2. Experts estimate that China's geotextiles will continue to double-digit growth in the next 15 years, of which the faster growth is PET spunbond filament geotextiles.

China plans huge investments in various projects such as water conservancy, electricity, transportation, environmental protection and river management, including water conservancy construction, South-to-North Water Diversion Project, electric power investment, road and railway construction, environmental engineering construction, harbor, airport and garbage disposal , Rivers and lakes governance, sand control and other projects, investment amounted to trillion yuan. In the next 10 years or more, China will have more infrastructure projects to be built and demand for geotextiles will also increase. China will become the largest marketing market for geosynthetics in the world.

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