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From January-November 2011 diesel engine production: Yuchai, China FAW, Weichai, Quanchai, Dongfeng Automobile, Yunnei Power, Jiangling Holdings, Dongfeng Chaochai, Shandong Huayuan Laidong, Beiqi Foton ranked diesel engine cumulative The top 10 production sites were 525,379 units, 397,068 units, 347,428 units, 344,330 units, 207,541 units, 197387 units, 179,741 units, 170,093 units, 154,477 units, and 133,770 units, which accounted for 16.08% and 12.15 respectively of the cumulative total output of diesel engines. %, 10.63%, 10.54%, 6.35%, 6.04%, 5.50%, 5.20%, 4.73%, 4.09%. The above-mentioned ten companies produced a total of 2.657 million units, accounting for 81.31% of the total cumulative production of diesel engines. 
Among the top companies in production and sales volume, the production and sales volume among enterprises is also uneven, but it can obviously be divided into three orders of magnitude, namely the three camps.
In the first camp, there was only one company, namely Guangxi Yuchai Machinery Group Co., Ltd., which produced 525,379 units in January-November and sold 665,094 units. It was the only one of the 23 companies that exceeded 500,000 units, and the sales volume exceeded 600,000 units. Enterprises, production and sales are all about 130,000 units more than China FAW, which ranks second, and it can be said that they are the only players.
The second camp includes three companies, namely China First Automobile Group Corporation, Weichai Holding Group Co., Ltd. and Anhui Quanchai Group Co., Ltd. Among them, China FAW's output of 397,068 units and sales of 421,639 units are indisputably stable in the second camp. The production and sales figures of Weichai and Quanchai are almost the same, with about 340,000 units.
The third camp includes 8 companies, namely Dongfeng Motor Corporation, Yunnei Power, Jiangling Holdings, Dongfeng Chaochai, Shandong Huayuan Laidong, Beiqi Foton, Weichai Power Yangchai and China National Heavy Duty Truck. Among them, Dongfeng Motor Co., Ltd. ranked first in the third camp with both production and sales exceeding 200,000 units, followed by Yunnei Power, with production and sales of around 200,000 units. The remaining six companies have sales and sales in the range of 100,000 to 200,000.
The above-mentioned 10 companies sold a total of 2.8221 million diesel engines, accounting for 81.85% of the total sales of diesel engines. From January to November 2011, the number of diesel engine sales of the top ten companies in the cumulative sales of vehicles from the same period of last year was three, and the number of companies that declined was seven. Cumulative growth of the company's situation: Beiqi Foton accumulated the largest increase of 72.04%; Jiangling Holdings cumulative increase of 7.48%; Shandong Huayuan Laiyue cumulative increase fell sharply to 0.28%, an increase of more than 5 percentage points.