Research, development, production, and sales of mechanized agricultural and horticultural machinery, livestock machinery, agricultural, forestry, animal husbandry and fishery machinery parts, environmental protection special equipment, intelligent unmanned aerial vehicles, new energy vehicles (excluding low-speed electric vehicles), deicing vehicles, snowmobiles, cleaning vehicles, spraying vehicles, industrial automatic control system devices, special production vehicles, and construction machinery; goods import and export, technology import and export.