General Projects: Mining machinery manufacturing; Mining machinery sales; Metal chain and other metal products manufacturing; Metal chain and other metal products sales; Gear and gear reduction, transmission box manufacturing; Bearing, gear, and transmission component manufacturing; Bearing, gear, and transmission component sales; Gear and gear reduction, transmission box sales; Industrial automatic control system equipment manufacturing; Industrial automatic control system equipment sales; Special equipment sales; Distribution switch control equipment manufacturing; Distribution switch control equipment sales; Casting machinery manufacturing; Non-ferrous metal casting; Casting machinery sales; Metal processing machinery manufacturing; (Except as otherwise required by laws and regulations, operate independently and lawfully based on the business license) License Projects: Goods import and export; Technology import and export; (Except as otherwise required by laws and regulations, approval is required for operation after approval by relevant authorities)