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Recently, the China Association of Automobile Manufacturers released statistical data on "China's auto industry production and sales newsletter". In 2011, 56 car engine companies that were included in the statistical scope accumulated production of 16.9171 million engines, accumulatively sold 179.714 million engines, in 2010. This compares with a decrease of 1.21% and 0.26% respectively. This growth rate is lower than the overall automobile production and sales growth of 2.05 and 2.71 percentage points respectively. 
It is reported that in 2011, of the top 50 companies with a cumulative production volume of more than 50,000 units, there were 44 companies (more than one in the previous year) with an annual output of more than 100,000 units, and annual production reached more than 200,000 units. There are 31 companies (2 less than the previous year), 20 companies with annual output of 300,000 or more (3 less than the previous year), and 14 companies with annual output of 400,000 units ( In the previous year, there was one less company. The number of companies with an annual output of more than 500,000 units reached a record high of 11 (one more than in the previous year). Among them, although FAW-Volkswagen ranked first in terms of production volume of 1,017,800 units, it was still lower than the 1.03 million production capacity of the first Chongqing Changan in 2010.
Divided by type of fuel, in 2011, the number of diesel engines completed 3.5886 million units and 3.7529 million units respectively, which was a decrease of 9.11% and 5.89% year-on-year, respectively, a sharp drop of 34.14 and 36.25 percentage points compared with the growth rate of the same period of the previous year. . From the overall performance of diesel engine companies, of the 23 diesel engine companies included in the 2011 statistics, 6 companies have accumulated production of more than 200,000 units (1 less than the previous year), and the cumulative output has exceeded 100,000 units. There are 13 companies (2 more than in the previous year), and 15 companies have accumulated production of more than 50,000 units (one more than in the previous year).
Judging from the cumulative production volume, Guangxi Yuchai, FAW Group, Anhui Quanchai, Weichai Holdings, Dongfeng Motor, Kunming Yunnei and Jiangling Holdings rank among the top seven, among which Anhui Quanchai and Kunming, which mainly produce light-duty diesel engines. Yunnei and Jiangling Holdings have improved their rankings, while Weifang, which mainly produces heavy-duty diesel engines, has dropped by one place. The most obvious change outside the top 7 is that China National Heavy Duty Truck, which had been ranked in the top 7 for the first time, fell to 12th place in 2011; and the other 7 cars outside the top 7 were Beiqi Futian and Weichai Power, Yangchai, Several companies such as Great Wall Motors and Qingling Group, which mainly produce light-duty diesel engines, performed well.
Among the top seven companies, the production concentration of the top five manufacturers was 56.02%, which was a decrease of 3.43 percentage points from the previous year; the production concentration of the top seven manufacturers was 67.46%, a decrease of 3.59% from the previous year. If we then select Dongfeng Chaochai and Shandong Huayuan Laidong to do the statistics for the two companies, the production concentration of the top nine companies can reach 77.16%, a decrease of 3.71 percentage points from the previous year. In the case where the total number of diesel engine production enterprises does not increase but decreases, the production concentration in the three stop segments continues to decline for two consecutive years, which fully shows the changes in the market structure of the heavy (type) decline light (type).
In the specific performance of diesel engine companies, although Guangxi Yuchai declined again on the basis of the decline in the previous year, it still topped the list with a total output of 621,200 units. Large-scale enterprises (annual output higher than 50,000 units), Beiqi Foton (annual growth rate 79.55%), Qingling (36.44%), Great Wall Motor (23.99%) and Weichai Power Yangchai (13.21%) The performance was relatively good; China Heavy Gas (-43.11%), FAW Group (-24.54%), and Dongfeng Chaochai (-21.06%) showed a large negative growth.