Auto parts or into China-US trade "minefield"

In the past few days, the U.S. trade friction with China has fluctuated. Relevant lawsuits concerning Europe and the United States accusing China of restricting the export of certain raw materials have not come to an end. On February 1, 2012, the United States decided to retroactively impose countervailing duties on Chinese solar panels. On February 5, 2012, the State Ministry of Commerce of China Issue an early warning: The United States may initiate more anti-dumping and anti-subsidy investigations on my auto parts products.

U.S. makes frequent attacks on Chinese products

According to the early warning of the Chinese Ministry of Commerce on February 5, 2012, on January 31, 2012, members of the U.S. manufacturing industry, Senator Brown, and other US members held a press conference accusing China of subsidizing the auto industry and damaging U.S. industries. The government has taken measures to restrict imports of Chinese auto parts and launched more anti-dumping and anti-subsidy investigations on engines, automotive electronic equipment, tires and other related products.

On the previous day, the U.S. Department of Commerce issued an announcement in the Federal Register on the preliminary determination of the anti-subsidy emergency for the solar battery (board) double reverse case.

Trade friction object "transformation and upgrading"

Why does the U.S. make frequent exports to China? The director of the Institute of International Economics of the Guangdong Provincial Academy of Social Sciences, Qiu Shan, analyzed with the Yangcheng Evening News reporter: “The big background is the slow recovery of the global economy. The high unemployment rate in developed countries has caused protection protectionism to flourish. The direct reason is that this year is the US general election. In the past year, politicians who attacked China’s exports in order to win votes had influenced the employment of the United States as a good natural channel. This phenomenon has to be 'attacked' almost every four years.

According to Khushan, it is necessary to pay attention to the fact that the object of US trade friction with China is also a “transition and upgrading” trend. In the past, there were more products with relatively low technological content, such as wooden floors and metal products. Nowadays, more and more high-tech products such as solar panels and auto parts have been targeted. The important development direction of "transition and upgrading".

Polyacrylamide

Polyacrylamide (PAM) is a water-soluble polymer, which is insoluble in most organic solvents, has good flocculating properties, can reduce frictional resistance between liquids, Can be divided into non-ionic, anionic, cationic and amphoteric four types.

When PAM is used for flocculation, it is related to the surface properties of the species being flocculated, especially the potential, viscosity, turbidity, and pH of the suspension. The kinetic potential of the particle surface is the reason for particle inhibition. Can reduce the potential and condense.

Granular polyacrylamide flocculant cannot be directly added to sewage. It must be dissolved in water before use, and its aqueous solution are used to treat sewage.The water in which the particulate polymer is dissolved should be clean. Generally tap water is suitable for formulating polymer solutions. Strong ACID, strong alkali, high salt water is not suitable for preparation. Water at room temperature is ok, no necessary to heat. Dissolution is slow when the water temperature is below 5 ° C. Increasing the water temperature will accelerate the dissolution rate, but above 40 ° C will accelerate the degradation of the polymer and affect the use effect. The solution concentration is recommended to be 0.1% -0.3%.

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