Manufacturing, processing, and sales of rigid pipes, flexible pipes, automotive parts, agricultural machinery parts, construction machinery and equipment, electromechanical equipment, and hardware tools; operation of export business of self-produced products and import business of machinery, equipment, parts, and raw materials required by the enterprise (excluding goods and technologies restricted or prohibited by the state; this enterprise includes its holding member enterprises). [Activities subject to legal approval shall be carried out only after obtaining relevant approvals.]