Cement product manufacturing; Concrete structural component manufacturing; Lightweight building material manufacturing; Mechanical equipment research and development; Domestic trade agency; Goods import and export; Technology import and export; Foreign contracted projects; Cement product sales; Concrete structural component sales; Lightweight building material sales; Building material sales; Non-metallic mineral and product sales; Metal material sales; Metal product sales; New metal functional material sales; Rubber product sales; New organic active material sales; High-performance fiber and composite material sales; Special equipment sales; Mechanical equipment sales; Intelligent basic manufacturing equipment sales; Mold sales; Synthetic material sales; Metal wire rope and its product sales; Seal sales; Construction steel bar product sales; Road freight transport for vehicles with a total mass of 4.5 tons or less (excluding online freight and dangerous goods); Loading and unloading; General cargo warehousing services (excluding hazardous chemicals and other items requiring licensing approval); Information technology consulting services; Mechanical equipment leasing; Production line management services; Enterprise management consulting; Labor services (excluding labor dispatch); Engineering management services; Professional design services; Engineering and technology research and experimental development; Technical services, technical development, technical consulting, technical exchange, technology transfer, technology promotion.