Manufacturing of agricultural, forestry, animal husbandry and fishery machinery parts; sales of agricultural, forestry, animal husbandry and fishery machinery parts; agricultural machinery services; housing leasing; non-residential real estate leasing; sales of plastic products; manufacturing of plastic products; manufacturing and sales of: agricultural machinery and equipment, all-terrain vehicles, auto parts, motorcycle parts); design, processing and sales of agricultural facilities; sales of refrigeration equipment; production and sales of: gasoline engines, water pump oil, generator sets; import and export of goods, technology import and export (except those prohibited and restricted by the state).