According to the statistics of the China Automobile Association, in July 2011, the country’s auto production was 1,306,100 units, a decrease of 6.96% from the previous period and an increase of 1.58% year-on-year; sales were 1,275,300 units, a decrease of 11.19% month-on-month and a year-on-year increase of 2.51%; January-July 2011 The national automobile production and sales amounted to 10.4624 million vehicles and 10.6101 million vehicles, which was an increase of 2.33% and 3.22% respectively year-on-year. Judging from the sales volume in the single month of 2011, after the overall automobile production and sales volume in June reversed, the sales volume in July decreased again, and there was a slight increase compared with the same period last year. From the cumulative sales from January to July, there was also a slight increase compared to the cumulative amount in the same period of last year. Diesel engine production and sales In July 2011, the total production and sales volume of China's vehicle diesel engines were 1.571 million units and 1.122 million units respectively, a month-on-month decrease of 5.39% and 10.84%, and a year-on-year decrease of 3.42% and 8.49% respectively. Also affected by the overall sales of the car. From January to July, the cumulative production and sales volume of diesel engines was 9,492,400 units and 9,718,200 units respectively, a cumulative decrease of 0.96% and 0.81% year-on-year. Among them, the production and sales volume of vehicle diesel engines in July was respectively 217,900 units and 227,100 units, which was a decrease of 3.87% and 13.79% compared with the previous period, a year-on-year decrease of 18.96% and 19.73%. From January to July 2011, the cumulative production and sales of diesel engines reached 2,158,900 units and 2,353,300 units respectively, with a cumulative decrease of 5.9% and 2.38%, respectively. Production and sales of enterprises From the perspective of the sales volume of major diesel engine manufacturers, the top ten companies in cumulative sales from January to July 2011 were Guangxi Yuchai, China FAW, Weichai Holdings, Anhui Quanchai, Dongfeng Automobile, Yunnei Power, Jiangxi Jiangling, and Dongfeng. Chaochai and Hualai internal combustion engines have sales of 464,000 units, 287,700 units, 234,300 units, 231,100 units, 147,500 units, 139,100 units, 119,300 units, 117,700 units, and 111,300 units. Among them, Guangxi Yuchai's single-month and accumulated sales are still far ahead of other companies. Its cumulative sales accounted for 19.87% of the total sales of diesel engines, which is higher than that of the second China FAW by nearly 8 percentage points. The cumulative sales of the top nine companies in July exceeded 100,000, and the cumulative sales of the nine companies reached 1.853 million units, accounting for 79.36% of the total sales of diesel engines. Pipeline Booster Pump,Vertical Pipeline Pump,Centrifugal Pipeline Booster Pump,Vertical Centrifugal Pump Vertical multistage centrifugal pump Co., Ltd. , http://www.china-suppliers.cn
Comparison of Sales in January-July 2011 
Sales of Diesel Engines for January-July 2011 
Accumulated sales market share of major diesel engine companies in 2011