Yunnei,s off-road products comprise two major series: the high-end four-valve DEF series and the classic two-valve YN series. The high-end DEF series includes models such as DEF10, DEF20, DEF30, DEF35, DEF36, DEF47, DEF67, DEF70, DEF90, and DEF130. The classic YN series includes models such as YN25, YN27, YN28, YN29, YN35, YN38, YN40, and YN48. The displacement range is 1.0L to 13L, with power coverage from 9.9 to 500 kW. Emissions meet China Off-road Stage IV and Euro V standards. The product market has been fully expanded to off-road sectors including wheeled tractors, agricultural harvesting and tillage machinery, construction machinery, forklift trucks, and stationary power units.