according toAccording to statistical analysis by the China Internal Combustion Engine Industry Association, in July 2025, sales of multi cylinder diesel internal combustion engines for commercial vehicles reached 139400 units, a month on month increase of -16.71% and a year-on-year increase of 12.48%; The cumulative sales volume from January to July was 116.21 units, a year-on-year increase of 3.55%. The top selling companies are Weichai, Yuchai, Yunnei, Jiangling, Fukuda Cummins, Quanchai, Jiefang Power, Jianghuai Automobile, Dongkang, and New Power Technology.