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| 83442 | Electrical conductivity testing and analysis of concrete | |
| 83442 | Electrical conductivity testing and analysis of glass | |
| 83442 | Electrical conductivity testing and analysis of metals | |
| 83442 | Electrical conductivity testing and analysis of other materials | |
| 83442 | Electrical conductivity testing and analysis of plastics | |
| 83442 | Electrical conductivity testing and analysis of textiles | |
| 83442 | Electrical conductivity testing and analysis of wood | |
| 88755 | Electrical conduit and fitting manufacturing services | |
| 87151 | Electrical cooking equipment, domestic, repair of | |
| 88759 | Electrical cord sets with insulated wire and connectors manufacturing services | |
| 88759 | Electrical door opening and closing devices manufacturing services | |
| 83322 | Electrical engineering design services for manufacturing constructions | |
| 83322 | Electrical engineering design services for mining constructions | |
| 83329 | Electrical engineering design services for natural gas or steam distribution projects | |
| 83329 | Electrical engineering design services for other construction projects | |
| 83329 | Electrical engineering design services for outdoor sport and recreation facilities | |
| 83324 | Electrical engineering design services for power projects | |
| 83325 | Electrical engineering design services for telecommunications and broadcasting projects | |
| 83322 | Electrical engineering design services for the automation of industrial processes | |
| 83321 | Electrical engineering design services for the construction of agricultural buildings | |
| 83323 | Electrical engineering design services for the construction of airfield runways | |
| 83323 | Electrical engineering design services for the construction of bridges | |
| 83322 | Electrical engineering design services for the construction of chemical and related facilities | |
| 83321 | Electrical engineering design services for the construction of commercial buildings | |
| 83327 | Electrical engineering design services for the construction of dams used primarily for drinking water or desalination purposes | |
| 83327 | Electrical engineering design services for the construction of dams used primarily for flood control or irrigation purposes | |
| 83324 | Electrical engineering design services for the construction of dams used primarily for power generation purposes | |
| 83323 | Electrical engineering design services for the construction of dams used primarily for transportation purposes | |
| 83323 | Electrical engineering design services for the construction of elevated highways | |
| 83323 | Electrical engineering design services for the construction of harbours | |
| 83323 | Electrical engineering design services for the construction of highways | |
| 83321 | Electrical engineering design services for the construction of industrial buildings | |
| 83322 | Electrical engineering design services for the construction of industrial plants and processes | |
| 83327 | Electrical engineering design services for the construction of irrigation works | |
| 83323 | Electrical engineering design services for the construction of local oil or gas pipelines and related works | |
| 83325 | Electrical engineering design services for the construction of local telecommunication cables and related works | |
| 83327 | Electrical engineering design services for the construction of local water pipelines and related works | |
| 83325 | Electrical engineering design services for the construction of long-distance communication lines | |
| 83323 | Electrical engineering design services for the construction of long-distance oil or gas pipelines | |
| 83324 | Electrical engineering design services for the construction of long-distance power lines (cables) | |
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