law、 Regulations、The State Council has decided that any business prohibited by law shall not be operated; law、 Regulations、 The State Council decided that permission should be granted( Approval) of, After approval by the examination and approval authority,( Approval) Document management; law、 Regulations、 The State Council decided that no license is required( Approval) of, Market entities independently choose to operate。(( Environmental protection equipment, Dams made of various materials, Rubber Dam, Automatic lifting hydraulic dam, Gas-pier dam, Production and sales and installation of accessories; Water conservancy project construction,Manufacturing, sales and installation of non-stressed cement prefabricated products; Control systems for various dam equipment; Production, sales and installation of environmental protection equipment for cleaning sewage and weeds in various water environments; Various municipal transportation public equipment、Various municipal facilities and equipment、 Harbor-style bus station、 Urban Sculpture、 Various school facilities, instrument, Equipment matching, production, sales and installation; Technical Services、 Technical Consulting、 Operate the export business of the company's own products and technologies、 Operate the company's production, Raw and auxiliary materials required for scientific research、 Instruments、 Mechanical equipment; Import and export of spare parts, technology and goods(Except for commodities that are restricted by the state and prohibited from import and export); Operating feed processing and“ Three in one supplement” business; office supplies、 Electronics、 High-tech intelligent product cultural products、 Hardware department store; Manufacturing and sales of polyurethane products、 electrical equipment、 Electric welding、 Auto Parts、 Building Materials; Urban flood control and water-stopping facilities、 product; Various chicken houses and automated feeding systems; Greenhouses and accessories、 Production, processing, manufacturing and sales of steel structures and accessories、Install。 Property Management; House rental and sale。)