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Dongfeng Automobile announced on the evening of August 15, 2014 that Dongfeng Liyang Wagon Co., Ltd., a controlling subsidiary of the company, had signed a purchase and sales contract for pure electric buses with Zhejiang Shikong Electric Vehicle Co., Ltd. It is planned that by the end of 2015, the Dongfeng Wagon will sell 5000-10000 pure-electric passenger cars to the space-time of Zhejiang Province, of which 500 will be guaranteed as of December 31, 2014, and strive to reach 1,000. And promised to complete the purchase of 5000-10,000 units of this custom model from January 1, 2016 to December 31, 2017.
The announcement stated that the pure electric passenger car is a modified vehicle based on the Dongfeng Yufeng Renshi long-shaft high roof, including the power distribution of 80KWH and 100KWH. Dongfeng Motor stated that there are certain uncertainties in the above sales plan for 2015-2017, and the company will disclose follow-up information according to the implementation of the contract.
At present, China is planning to gradually reduce fuel subsidies for urban buses and increase subsidies for the operation of new energy buses to encourage the application of new energy buses. Pure electric buses are gradually favored by more cities and customers because of their “zero pollution, zero emissions†features.
Dongfeng Motor's main products include light vehicles, SUVs, pickup trucks and so on. The company's Zhengzhou Nissan Motor Co., Ltd. has electric vehicle R&D and manufacturing capabilities. Analysts pointed out that Zhengzhou Nissan was one of the first companies to pass the “New Energy Vehicle Manufacturing Qualification†audit that was reviewed by the State in accordance with the new regulations. Four of its pure electric vehicles, including its own brands Rui Jing and Odin, took the lead in obtaining national electric vehicle product announcements. And listed in the "Ministry of Industry and Information Technology" list of recommended models for the promotion and application of energy-saving and new energy vehicles.
Industry insiders believe that the development of the new energy bus market is vast. The company’s signing of a pure electric bus contract will help promote the development of related businesses and expand market share.
PVC pipe is extruded by hot pressing method after the cooperation of PVC resin, stabilizer and lubricant. It is the earliest plastic pipe developed and applied.
PVC-U pipe has strong corrosion resistance, easy adhesion, low price and hard texture. However, due to the leakage of PVC-U monomer and additives, it is only suitable for water supply system with transmission temperature not exceeding 45 ℃. Plastic pipes are used for drainage, wastewater, chemicals, heating and cooling fluids, food, ultra pure liquids, mud, gas, compressed air and vacuum system applications.
PVC pipe fittings include direct connection, tee and cross joint, and the tee is divided into 45 degrees and 90 degrees.
Advantages of PVC pipe
1. It has good tensile and compressive strength, but its flexibility is not as good as other plastic pipes.
2. Small fluid resistance: the pipe wall of PVC-U pipe is very smooth and has little resistance to fluid. Its roughness coefficient is only 0.009. Its water transmission capacity can be 20% higher than that of cast iron pipe with the same pipe diameter and 40% higher than that of concrete pipe.
3. Excellent corrosion resistance and drug resistance: PVC-U pipe has excellent acid, alkali and corrosion resistance, is not affected by moisture and soil pH, and does not need any anti-corrosion treatment during pipe laying.
4. Good water tightness: the installation of PVC-U pipe has good water tightness whether it is connected by bonding or rubber ring.
5. Anti bite: PVC-U pipe is not a nutrient source, so it will not be eroded by rodents. According to the experiment conducted by the National Health Foundation in Michigan, mice will not bite PVC-U pipes.
6. Performance test: curing time shrinkage splitting strength tensile property peel strength thermal stability application period storage period release of harmful substances.
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