4 DC SERVICES LLC

236210 Industrial Building Construction 237120 Oil and Gas Pipeline and Related Structures Construction 237990 Other Heavy and Civil Engineering Construction 238120 Structural Steel and Precast Concrete Contractors 238130 Framing Contractors 238190 Other Foundation, Structure, and Building Exterior Contractors 238290 Other Building Equipment Contractors 541360 Geophysical Surveying and Mapping Services 541370 Surveying and Mapping (except Geophysical) Services 811310 Commercial and Industrial Machinery and Equipment (except Automotive and Electronic) Repair and Maintenance

1945 PONTOONS AND FLOATING DOCKS 2510 VEHICULAR CAB, BODY, AND FRAME STRUCTURAL COMPONENTS 2520 VEHICULAR POWER TRANSMISSION COMPONENTS 2530 VEHICULAR BRAKE, STEERING, AXLE, WHEEL, AND TRACK COMPONENTS 2590 MISCELLANEOUS VEHICULAR COMPONENTS 2805 GASOLINE RECIPROCATING ENGINES, EXCEPT AIRCRAFT; AND COMPONENTS 2810 GASOLINE RECIPROCATING ENGINES, AIRCRAFT PRIME MOVER; AND COMPONENTS 2815 DIESEL ENGINES AND COMPONENTS 2820 STEAM ENGINES, RECIPROCATING; AND COMPONENTS 2825 STEAM TURBINES AND COMPONENTS 2850 GASOLINE ROTARY ENGINES AND COMPONENTS 2895 MISCELLANEOUS ENGINES AND COMPONENTS 2910 ENGINE FUEL SYSTEM COMPONENTS, NONAIRCRAFT 2920 ENGINE ELECTRICAL SYSTEM COMPONENTS, NONAIRCRAFT 2930 ENGINE COOLING SYSTEM COMPONENTS, NONAIRCRAFT 2940 ENGINE AIR AND OIL FILTERS, STRAINERS, AND CLEANERS, NONAIRCRAFT 2950 TURBOSUPERCHARGER AND COMPONENTS 2990 MISCELLANEOUS ENGINE ACCESSORIES, NONAIRCRAFT 3010 TORQUE CONVERTERS AND SPEED CHANGERS 3020 GEARS, PULLEYS, SPROCKETS, AND TRANSMISSION CHAIN 3030 BELTING, DRIVE BELTS, FAN BELTS, AND ACCESSORIES 3040 MISCELLANEOUS POWER TRANSMISSION EQUIPMENT 3120 BEARINGS, PLAIN, UNMOUNTED 3130 BEARINGS, MOUNTED 3210 SAWMILL AND PLANING MILL MACHINERY 3220 WOODWORKING MACHINES 3230 TOOLS AND ATTACHMENTS FOR WOODWORKING MACHINERY 3405 SAWS AND FILING MACHINES 3408 MACHINING CENTERS AND WAY-TYPE MACHINES 3410 ELECTRICAL AND ULTRASONIC EROSION MACHINES 3411 BORING MACHINES 3412 BROACHING MACHINES 3413 DRILLING AND TAPPING MACHINES 3414 GEAR CUTTING AND FINISHING MACHINES 3415 GRINDING MACHINES 3416 LATHES 3417 MILLING MACHINES 3418 PLANERS AND SHAPERS 3419 MISCELLANEOUS MACHINE TOOLS 3422 ROLLING MILLS AND DRAWING MACHINES 3424 METAL HEAT TREATING AND NON-THERMAL TREATING EQUIPMENT 3426 METAL FINISHING EQUIPMENT 3431 ELECTRIC ARC WELDING EQUIPMENT 3432 ELECTRIC RESISTANCE WELDING EQUIPMENT 3433 GAS WELDING, HEAT CUTTING, AND METALIZING EQUIPMENT 3436 WELDING POSITIONERS AND MANIPULATORS 3438 MISCELLANEOUS WELDING EQUIPMENT 3439 MISCELLANEOUS WELDING, SOLDERING, AND BRAZING SUPPLIES AND ACCESSORIES 3441 BENDING AND FORMING MACHINES 3442 HYDRAULIC AND PNEUMATIC PRESSES, POWER DRIVEN 3443 MECHANICAL PRESSES, POWER DRIVEN 3444 MANUAL PRESSES 3445 PUNCHING AND SHEARING MACHINES 3446 FORGING MACHINERY AND HAMMERS 3447 WIRE AND METAL RIBBON FORMING MACHINES 3448 RIVETING MACHINES 3449 MISCELLANEOUS SECONDARY METAL FORMING AND CUTTING MACHINES 3450 MACHINE TOOLS, PORTABLE 3455 CUTTING TOOLS FOR MACHINE TOOLS 3456 CUTTING AND FORMING TOOLS FOR SECONDARY METALWORKING MACHINERY 3460 MACHINE TOOL ACCESSORIES 3461 ACCESSORIES FOR SECONDARY METALWORKING MACHINERY 3465 PRODUCTION JIGS, FIXTURES, AND TEMPLATES 3470 MACHINE SHOP SETS, KITS, AND OUTFITS 3805 EARTH MOVING AND EXCAVATING EQUIPMENT 3810 CRANES AND CRANE-SHOVELS 3815 CRANE AND CRANE-SHOVEL ATTACHMENTS 3820 MINING, ROCK DRILLING, EARTH BORING, AND RELATED EQUIPMENT 3825 ROAD CLEARING, CLEANING, AND MARKING EQUIPMENT 3830 TRUCK AND TRACTOR ATTACHMENTS 3835 PETROLEUM PRODUCTION AND DISTRIBUTION EQUIPMENT 3895 MISCELLANEOUS CONSTRUCTION EQUIPMENT 3910 CONVEYORS 3915 MATERIALS FEEDERS 3920 MATERIAL HANDLING EQUIPMENT, NONSELF-PROPELLED 3930 WAREHOUSE TRUCKS AND TRACTORS, SELF-PROPELLED 3940 BLOCKS, TACKLE, RIGGING, AND SLINGS 3950 WINCHES, HOISTS, CRANES, AND DERRICKS 3960 FREIGHT ELEVATORS 3990 MISCELLANEOUS MATERIALS HANDLING EQUIPMENT 4010 CHAIN AND WIRE ROPE 4020 FIBER ROPE, CORDAGE, AND TWINE 4030 FITTINGS FOR ROPE, CABLE, AND CHAIN 4110 REFRIGERATION EQUIPMENT 4120 AIR CONDITIONING EQUIPMENT 4130 REFRIGERATION AND AIR CONDITIONING COMPONENTS 4140 FANS, AIR CIRCULATORS, AND BLOWER EQUIPMENT 4150 VORTEX TUBES AND OTHER RELATED COOLING TUBES 4410 INDUSTRIAL BOILERS 4810 VALVES, POWERED 4820 VALVES, NONPOWERED 4910 MOTOR VEHICLE MAINTENANCE AND REPAIR SHOP SPECIALIZED EQUIPMENT 4920 AIRCRAFT MAINTENANCE AND REPAIR SHOP SPECIALIZED EQUIPMENT 5110 HAND TOOLS, EDGED, NONPOWERED 5120 HAND TOOLS, NONEDGED, NONPOWERED 5130 HAND TOOLS, POWER DRIVEN 5133 DRILL BITS, COUNTERBORES, AND COUNTERSINKS: HAND AND MACHINE 5136 TAPS, DIES, AND COLLETS; HAND AND MACHINE 5140 TOOL AND HARDWARE BOXES 5180 SETS, KITS, AND OUTFITS OF HAND TOOLS J019 MAINTENANCE, REPAIR, AND REBUILDING OF EQUIPMENT- SHIPS, SMALL CRAFT, PONTOONS, AND FLOATING DOCKS J020 MAINTENANCE, REPAIR, AND REBUILDING OF EQUIPMENT- SHIP AND MARINE EQUIPMENT J023 MAINTENANCE, REPAIR, AND REBUILDING OF EQUIPMENT- GROUND EFFECT VEHICLES, MOTOR VEHICLES, TRAILERS, AND CYCLES J024 MAINTENANCE, REPAIR, AND REBUILDING OF EQUIPMENT- TRACTORS J025 MAINTENANCE, REPAIR, AND REBUILDING OF EQUIPMENT- VEHICULAR EQUIPMENT COMPONENTS J028 MAINTENANCE, REPAIR, AND REBUILDING OF EQUIPMENT- ENGINES, TURBINES, AND COMPONENTS J029 MAINTENANCE, REPAIR, AND REBUILDING OF EQUIPMENT- ENGINE ACCESSORIES J031 MAINTENANCE, REPAIR, AND REBUILDING OF EQUIPMENT- BEARINGS J032 MAINTENANCE, REPAIR, AND REBUILDING OF EQUIPMENT- WOODWORKING MACHINERY AND EQUIPMENT J034 MAINTENANCE, REPAIR, AND REBUILDING OF EQUIPMENT- METALWORKING MACHINERY J035 MAINTENANCE, REPAIR, AND REBUILDING OF EQUIPMENT- SERVICE AND TRADE EQUIPMENT J036 MAINTENANCE, REPAIR, AND REBUILDING OF EQUIPMENT- SPECIAL INDUSTRY MACHINERY J037 MAINTENANCE, REPAIR, AND REBUILDING OF EQUIPMENT- AGRICULTURAL MACHINERY AND EQUIPMENT J040 MAINTENANCE, REPAIR, AND REBUILDING OF EQUIPMENT- ROPE, CABLE, CHAIN, AND FITTINGS J043 MAINTENANCE, REPAIR, AND REBUILDING OF EQUIPMENT- PUMPS AND COMPRESSORS J047 MAINTENANCE, REPAIR, AND REBUILDING OF EQUIPMENT- PIPE, TUBING, HOSE, AND FITTINGS J048 MAINTENANCE, REPAIR, AND REBUILDING OF EQUIPMENT- VALVES J049 MAINTENANCE, REPAIR, AND REBUILDING OF EQUIPMENT- MAINTENANCE AND REPAIR SHOP EQUIPMENT J051 MAINTENANCE, REPAIR, AND REBUILDING OF EQUIPMENT- HAND TOOLS J052 MAINTENANCE, REPAIR, AND REBUILDING OF EQUIPMENT- MEASURING TOOLS J053 MAINTENANCE, REPAIR, AND REBUILDING OF EQUIPMENT- HARDWARE AND ABRASIVES J054 MAINTENANCE, REPAIR, AND REBUILDING OF EQUIPMENT- PREFABRICATED STRUCTURES AND SCAFFOLDING J055 MAINTENANCE, REPAIR, AND REBUILDING OF EQUIPMENT- LUMBER, MILLWORK, PLYWOOD, AND VENEER J056 MAINTENANCE, REPAIR, AND REBUILDING OF EQUIPMENT- CONSTRUCTION AND BUILDING MATERIALS J072 MAINTENANCE, REPAIR, AND REBUILDING OF EQUIPMENT- HOUSEHOLD AND COMMERCIAL FURNISHINGS AND APPLIANCES J095 MAINTENANCE, REPAIR, AND REBUILDING OF EQUIPMENT- METAL BARS, SHEETS, AND SHAPES K019 MODIFICATION OF EQUIPMENT- SHIPS, SMALL CRAFT, PONTOONS, AND FLOATING DOCKS K020 MODIFICATION OF EQUIPMENT- SHIP AND MARINE EQUIPMENT K023 MODIFICATION OF EQUIPMENT- GROUND EFFECT VEHICLES, MOTOR VEHICLES, TRAILERS, AND CYCLES K024 MODIFICATION OF EQUIPMENT- TRACTORS K025 MODIFICATION OF EQUIPMENT- VEHICULAR EQUIPMENT COMPONENTS K028 MODIFICATION OF EQUIPMENT- ENGINES, TURBINES, AND COMPONENTS K029 MODIFICATION OF EQUIPMENT- ENGINE ACCESSORIES N019 INSTALLATION OF EQUIPMENT- SHIPS, SMALL CRAFT, PONTOONS, AND FLOATING DOCKS N020 INSTALLATION OF EQUIPMENT- SHIP AND MARINE EQUIPMENT N023 INSTALLATION OF EQUIPMENT- GROUND EFFECT VEHICLES, MOTOR VEHICLES, TRAILERS, AND CYCLES N024 INSTALLATION OF EQUIPMENT- TRACTORS N025 INSTALLATION OF EQUIPMENT- VEHICULAR EQUIPMENT COMPONENTS N028 INSTALLATION OF EQUIPMENT- ENGINES, TURBINES, AND COMPONENTS N029 INSTALLATION OF EQUIPMENT- ENGINE ACCESSORIES N032 INSTALLATION OF EQUIPMENT- WOODWORKING MACHINERY AND EQUIPMENT N034 INSTALLATION OF EQUIPMENT- METALWORKING MACHINERY N035 INSTALLATION OF EQUIPMENT- SERVICE AND TRADE EQUIPMENT N036 INSTALLATION OF EQUIPMENT- SPECIAL INDUSTRY MACHINERY