In May this year, heavy truck sales in China are estimated to have totaled 70,000 units, up 42 percent year on year, while down 16 percent month on month, according to the data issued by cvworld.cn, a Chinese auto industry information service provider.Heavy truck sales in China are estimated at 395,000 units in the first five months this year, up 21.0 percent year on year.   The volume of heavy truck sales in May in China was the second lowest level in the past seven years, in that period only being higher than the volume recorded in May 2022.  According to cvworld.cn, heavy truck sales in June may indicate a slight month-on-month decline, while heavy truck sales in the second quarter of the current year are expected to reach 215,000 units, up 46.0 percent year on year, while down 10.0 percent compared to the first quarter.