General projects:engineering and technologyresearch andexperimental development;Manufacturing of metal products for safety and fire protection;Research and development of metal products;Metal products sales; Security equipment manufacturing;Security equipment sales;Fire equipment sales;General valve and cockmanufacturingexcluding specialequipmentmanufacturing);Valve and cock sales;Valve and cock research and development; Spray gun and similar equipment manufacturingSales of spray guns and similar appliances;Hardware products manufacturing; Hardware products retail;Hardware products wholesale;Hardware productresearch and developmentManufacturing of building decorationplumbing pipe parts and other building metal products(except for projects subject to approval accordingto lawindependently carry out business activities according to law with business licenses)