A - Material processing equipment
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B - Equipment for the production, transport and distribution of concrete, mortar and rendering mixes
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C - Lifting gear
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D - Equipment for earthmoving and soil compaction
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E - Road construction machinery
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F - Railway track construction equipment
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G - Floating equipment
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H - Tunnel and mining construction equipment
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J - Pile drivers and extractors, soil injection equipment
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K - Drilling equipment, diaphragm wall equipment
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L - Equipment for pipe jacking and pipeline construction
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M - Equipment and plants for decontamination and environment protection
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P - Transport vehicles
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Q - Air compressors, pneumatic tools
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Q.0 - Screw-type compressors, mobile
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Q.1 - Screw-type compressors, stationary
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Q.2 - Piston compressors
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Q.3 - Miscellaneous compressors
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Q.4 - Compressed-air reservoirs
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Q.5 - Accessories for compressed-air equipment
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Q.5.0 - Compressed-air coolers
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Q.5.1 - Compressed-air dryers
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Q.5.2 - Compressed-air filters
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Q.5.3 - Compressed-air control equipment and devices
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Q.5.30 - Compressed-air control unit, servo-assisted
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Q.5.31 - Compressed-air measuring and control unit
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Q.5.32 - Compressed-air control valve, spring-loaded
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Q.5.33 - Compressed-air control valve, weight-loaded
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Q.5.34 - Compressed-air control container
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Q.5.4 - Compressed-air flow meters
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Q.6 - Compressed-air tools and accessories
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Q.7 - Equipment for the machining of drilling tools
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Q.8 - Miscellaneous equipment, pneumatically operated
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Q.9 - Air locks and attachments for caisson operations
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R - Equipment for power generation, transformation and distribution
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S - Hydraulic cylinders and hydraulic units
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T - Centrifugal and piston pumps, pipelines
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U - Formwork and scaffolds
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W - Workshop machines and equipment
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X - Construction site accomodations, containers
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Y - Equipment for surveying, laboratory, office, communication and monitoring
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