Justice Ventilation Regulation and Administration of Communications Plumbing Justice Air Traffic Control Scenic and Sightseeing Transportation Other Justice Regulation and Administration of Communications International Plumbing Management Other Justice Ventilation Water

Gases Hot water Control, safety, signalling and light equipment Control, safety or signalling equipment for inland waterways Heating works Control, safety or signalling equipment for parking facilities Command, control, communication systems Electricity, heating, solar and nuclear energy Control, safety or signalling equipment for port installations Command, control, communication and computer systems Pressure-reducing, control, check or safety valves Control, safety or signalling equipment for roads Heating, ventilation and air-conditioning installation work Control, safety or signalling equipment for airports

Traffic control Water Supply of natural gas Water, sanitation and hygiene kits Water, sanitation and hygiene kit Water, sanitation and hygiene kits

Eastern Europe Europe

Environment and Pollution-Recycling Non-Renewable Energy Supply Airports Oil and Gas Water and Sanitation Printing and Publishing Construction Energy-Power and Electrical Computer Hardwares and Consumables Steel Aviation