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-- FreeClass --
10 civil engineering, earthworks, waste disposal
10-05 backfill
10-10 asphalt
10-20 drainage fleece, soil reinforcement
10-25 premises drainage systems
10-30 sewer, pipes
10-35 underground tanks
10-40 disposal (excluding transport)
10-50 geothermal energy : alternative heating system
12 construction, roofing
14 insulation, plaster, sealing
16 interiour development
18 floor mat, wall covering, components
20 outdoor plants, garden
22 heating, sanitary, ventilation, electrical
24 construction chemicals
26 tools, building site, fixing
28 logistics, equipment, subcontractors, other
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