Within the scope of national laws and policies, the investment, development, construction, and maintenance of railway infrastructure and rail transit projects entrusted by Heilongjiang Transportation Investment Group Co., Ltd.; railway equipment, mechanical equipment (excluding special machinery and power facilities), railway transportation equipment  And device development, sales, installation and maintenance; warehousing services (excluding hazardous chemicals), loading and unloading, and handling services; real estate development; self-owned house leasing; property management; design, production, agency, and advertising business; airport infrastructure investment  ; Railway passenger and freight transportation operations, etc.