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According to statistics provided by the customs on imports and exports, compiled by the China Association of Automobile Manufacturers, the import and export of components of the driving system in June 2011 are analyzed as follows:
First, the export of parts and components of the driving system
In June 2011, the export value of the components of the driving system products was 1.632 billion U.S. dollars, an increase of 31.13% over the same period in 2010. From January to June, the cumulative export value of parts and components of the driving system was US$8.516 billion, an increase of 36.83% over the same period of 2010. From January to June, the major exporting countries of the driving system component products were the United States, the United Arab Emirates, Australia, Japan, and the United Kingdom.
Second, the driving system component product imports
In June 2011, the import value of components for the driving system was US$135 million, an increase of 17.65% over the same period in 2010. From January to June, the cumulative import value of components for the driving system was 754 million U.S. dollars, an increase of 28.48% over the same period of 2010. From January to June, the major importing countries of the driving system component products were: Japan, Germany, South Korea, the United States, and Italy.
In terms of building materials, industrial products, daily necessities, floor leather, floor tiles, artificial leather, pipes, wires and cables, packaging films, bottles, foaming materials, sealing materials, and fibers, PVC was the world`s largest production of general-purpose plastics, and its applications are very widely. Widely used in all aspects
PVC is a white powder with an amorphous structure. The degree of branching is relatively small. The relative density is about 1.4. The glass transition temperature is 77~90°C. It begins to decompose at about 170°C. It has poor stability to light and heat. After prolonged exposure to sunlight, it will decompose to produce hydrogen chloride, and further automatically catalyze the decomposition, causing discoloration, and the physical and mechanical properties also rapidly decline. In actual applications, stabilizers must be added to improve the stability of heat and light.
The production process of PVC Resin SG8 and PVC RESIN SG5 is basically the same, and the production equipment is exactly the same. The main difference lies in the formulation of additives, polymerization temperature, reaction pressure and so on. The reaction temperature and reaction pressure of SG-8 resin have basically reached the working pressure limit of the polymerizer. The reaction requirements are relatively strict, and the requirements on operation, safety, technology, and personnel quality are more stringent, and the resin quality is more difficult to control.
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