Soil Preparation Electric Power Transmission Ventilation All Other Telecommunications Plumbing All Other Telecommunications Highway Fire Protection All Other Telecommunications Construction Architectural Highway Agriculture Plumbing Highway Fire Protection Research and Development in the Physical Environment Management Architectural Services Ventilation Engineering Services Research and Development in the Physical Construction

Lime Iron, lead, zinc, tin and copper Construction work for bridges Plants Control, safety, signalling and light equipment Architectural, engineering and planning services Construction, foundation and surface works for highways, roads Iron Engineering, auxiliary, average, loss, actuarial and salvage insurance services Control, safety or signalling equipment for inland waterways Architectural, engineering and surveying services Wells construction work Limes Safety cases Business services: law, marketing, consulting, recruitment, printing and security Control, safety or signalling equipment for parking facilities Construction work Command, control, communication systems Electricity, heating, solar and nuclear energy Control, safety or signalling equipment for port installations Command, control, communication and computer systems Monitors Pressure-reducing, control, check or safety valves Other services Control, safety or signalling equipment for roads Goods used in construction Electricity Architectural, construction, engineering and inspection services Control, safety or signalling equipment for airports

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Civil Works Building Environment and Pollution-Recycling Automobiles and Auto Parts Non-Renewable Energy Supply Architecture Engineering Roads and Highways-Bridge Telecommunications Law and Legal Printing and Publishing Services Railways-Rail-Railroad Defence and Security Electricity Technology Hardware and Equipment Construction Energy-Power and Electrical Computer Hardwares and Consumables Industry Petroleum Products Building Material Marine