| Machine Tools, Manufacture And Trading | 6200 |
| Machinery And Precision Tools | 3338 |
| General Mechanics | 2880 |
| Hydraulic Equipment | 2499 |
| Metallurgy | 2235 |
| Metallic Constructions | 2163 |
| Steel Manufacturing | 1956 |
| Agricultural Mechanics | 1900 |
| Bodywork (Construction Of) | 1516 |
| Non Ferrous Metals And Alloys (Production, Transformation, Sales) | 1468 |
| General Foundries | 1243 |
| Sharpening | 1191 |
| Soldering Equipment And Supplies | 1120 |
| Manufacture, Installation And Repair Of Pumps | 1087 |
| Hand Tools (Manufacture, Wholesale) | 971 |
| Metal Treatment | 910 |
| Connectors | 901 |
| Rectification, Machining, And Milling | 761 |
| Slicing, Turning | 729 |
| Engraving And Decoration On Metals | 684 |
| Stamping, Die Cutting | 594 |
| Manufacture Of Tanks, Cisterns And Reservoirs | 554 |
| Mechanical Treatment Of Surfaces (Equipment And Installation) | 540 |
| Ball Bearings, Needles And Rollers | 521 |
| Gears And Transmission Systems | 506 |
| Manufacture Of Electric Motors | 426 |
| Manufacture And Sharpening Of Saw Blades | 341 |
| Metal (Work, Polishing) | 338 |
| Cast Foundries | 311 |
| Manufacture Of Springs | 275 |
| Sheet-Metal Workshop | 257 |
| Galvanization, Tinning, Leading | 250 |
| Non Ferrous Metal Tubes And Piping | 233 |
| Hardwares (Wholesale) | 228 |
| Rolling Mills | 226 |
| Sand Blasting, Steel Grit Blasting, Polishing | 215 |
| Industrial Blades And Knives | 209 |
| Tinsmiths | 202 |
| Steel: Metal Working And Transformed Products (Manufacture, Sale) | 201 |
| Anti-Rust Treatment | 180 |
| Industrial Presses | 172 |
| Wire Works | 171 |
| Air And Gas Filters | 154 |
| Vacuum Pumps | 147 |
| Agitators And Mixers (Manufacture) | 130 |
| Industrial Furnaces | 128 |
| Industrial Marking | 117 |
| Compressors | 103 |
| Nuts And Bolts, Screws, Nails | 102 |
| Foundries (Supplies For) | 92 |
| Non Ferrous Metal Tubes And Piping (Manufacture, Sales) | 88 |
| Soldering And Cutting By Laser | 83 |
| Blowtorch Welding And Cutting | 83 |
| Aluminium And Alloys (Production, Transformation And Trade) | 80 |
| Cutting And Stamping | 72 |
| Pneumatic Tools | 72 |
| Arms And Ammunition (Manufacture, Wholesale) | 71 |
| Forges And Blast Furnaces | 54 |
| Letterboxes | 54 |
| Sandblasting (Equipment And Supplies) | 54 |
| Ferrous Metal Foundries | 50 |
| Manufacture Of Grinders And Crushers | 46 |
| Metal Work: Machines And Equipment | 43 |
| Technical Expert | 41 |
| Portable Electrical Equipment (Manufacture, Wholesale) | 38 |
| Manufacture Of Valves | 36 |
| Production And Transformation Of Non-Ferrous Metals | 34 |
| Industrial Diamonds | 33 |
| Non Metallic Coatings (Enamelling, Paint, Plastification) | 33 |
| Chain Manufacturing | 32 |
| Metallic Washers | 32 |
| Cutting And Stamping Tools | 32 |
| Electromechanical Engineering | 31 |
| Furnace Construction | 25 |
| Welding, Equipment And Tools | 25 |
| Turbine | 22 |
| Saws (Manufacture, Wholesale) | 21 |
| Cutlery (Manufacture, Wholesale) | 19 |
| Keys: Outlining And Sharpening Machines | 18 |
| Manufacture Of Heat Pumps | 18 |
| Mechanical Tooling | 18 |
| Overhaul, Reconstruction Of Machines-Tools | 17 |
| Eletrolytical And Thick Chemical Coatings | 16 |
| Grinding Machines, Sanders And Polishers | 16 |
| Stripping, Grease Removal (Preparation Of Surfaces) | 15 |
| Hardware (Manufacture) | 14 |
| Abrasives And Super Abrasives (Manufacture, Wholesale) | 13 |
| Manufacture Of Moulds And Models | 13 |
| Manufacture Of Thermal Engines | 12 |
| Non Ferrous Metal And Alloys Foundries | 10 |
| Manufacture Of Grinding Wheels | 10 |
| Street Maintenance And Cleaning | 10 |
