Business All Other Professional Professional Regulation and Administration of Communications Religious Other Professional Construction Architectural Regulation and Administration of Communications Agriculture Research and Development in the Physical Other Similar Organizations (except Business Environment All Other Professional Other Similar Organizations (except Business Engineering Services Research and Development in the Physical Construction Professional

Gases Construction work for pipelines, communication and power lines, for highways, roads, airfields and ra... Architectural, engineering and planning services Construction, foundation and surface works for highways, roads Oil, petrol and air-intake filters Architectural, engineering and surveying services Wells construction work Construction work Foundation work for highways, roads, streets and footpaths Environmental impact assessment for construction Construction work for highways, roads Surveying, hydrographic, oceanographic and hydrological instruments and appliances Other services Environmental impact assessment other than for construction Goods used in construction Environmental monitoring for construction Architectural, construction, engineering and inspection services Radio, television, communication, telecommunication and related equipment Environmental monitoring other than for construction Postal orders

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Civil Works Environment and Pollution-Recycling Automobiles and Auto Parts Non-Renewable Energy Supply Architecture Engineering Postal and Courier Services Roads and Highways-Bridge Oil and Gas Environmental Work Services Railways-Rail-Railroad Electricity Construction Agriculture-Food and Beverages Consultancy Energy-Power and Electrical Computer Hardwares and Consumables Steel Industry Petroleum Products Marine