- Plants for the chemical industry
- Plants for the petrochemical industry

- Foundry plants
- Hot-rolling mills
- Plants and equipment for iron and steel works

- Gantry and indoor cranes
- Industrial furnace systems
- Laser systems for surface cleaning and removal of coatings
- Mixed cargo and bulk goods stores
- Pipelines
- Plants for hardening and surface treatment
- Plants for the beverages industry
- Plants for the cellulose,paper,cardboard,and graphics industries
- Plants for the iron and metalworking industries
- Plants for the rubber and plastics industry
- Refuse incinerators
- Special machines and plants
- Tank storage depots
- Vacuum casting plants for Rapid Tooling/Rapid Prototyping
- Vibrators,oscillating machines
- Water treatment plants(s.a. Energy)
- Waterworks

- Building and construction(civil engineering)
- Foundation engineering and tunnel construction
- Transport and communication facilities

- Steel hudraulic structures
- Steel structures
- Structural steelwork;other

- Sound insulation in buildings
- Sound insulation in industrial plant applications
- Sound insulation in traffic applications

- Air cleaning facilities for asbestos redevelopment jobs
- Dust removal installations for plant engineering
- Exhaust air cleaning;solids and liquids
- Filter installations for plant engineering
- Machines and equipment for maintenance and repair of industrial plants
- Systems and equipment for cleaning exhaust air and waste gas by removing gaseous matter and odours
- Systems and equipment for the prevention of air pollution;other

- Walls and facades

- Hall type buildings;other
- Multi-purpose halls
- Prefabricated and system-built halls
- Steel frame halls

- Barriers and enclosures
- Builders hoists and winches
- Building machinery for construction and civil engineering work;other
- Chassis
- Concrete and mortar mixers
- Conveyor systems
- Ladders
- Reinforcing steel,bending and cutting machines
- Timber,steel pipe and lightmetal scaffolding
- Vibrating equipment for construction sites
- Water jet cutting systems(high pressure) for structural and civil engineering
- Weighing,measuring and dosing apparatus

- Construction machinery accessories
- Crushing,screening and sizing machines
- Drilling equipment and systems
- Excavators
- Machines and off-highway vehicles for earthwork purposes
- Machines for stone quarrying and processing
- Machines,plant and equipment for the cement,lime,gypsum,trass,and chalk industry

- Certification for the field of plant engineering
- Commissioning of projects and plants for the field of plant engineering
- Documentation for the field of plant engineering
- Expert opinions,technical studies for the field of plant engineering
- Plant assembly
- Project management/project monitoring for the field of plant engineering
- Support and after-sales service for the field of plant engineering
- Technical tests for the field of plant engineering
- Trade publications in the fields of contracting,plant engineering,industrial construction

- Centrifugal casting
- Chill casting
- Low-pressure chill casting

- Composite casting processes
- Continuous casting processes
- Diecasting processes
- Investment casting according to other investment casting processes
- Investment casting according to the waste-wax process
- Lost wax process(investment casting)
- Precision cast products;general

- Aluminium sand castings
- Cast products;other
- Castings according to other casting processes
- Sand casting processes;iron/steel castings
- Sand casting processes;light metal castings
- Sand casting processes;non-ferrous castings
- Sand casting processes;non-ferrous heavy metal castings
- Sand casting processes;other castings
- Sand casting;general

- Castings according to other moulding processes
- Full moulding processes
- Hand moulding processes
- Investment casting with ceramic mould
- Mechanical moulding processes
- Shell moulding processes
- Vacuum moulding processes

- Cast iron with lamellar graphite(grey cast iron);other
- Cast iron with lamellar graphite;high alloy
- Cast iron with lamellar graphite;low alloy
- Cast iron with lamellar graphite;Meehanite
- Cast iron with lamellar graphite;unalloyed

- Cast iron with lamellar graphite;Ferrocast quality

- Cast iron with nodular graphite;other
- Spheroidal graphite cast iron;high alloy
- Spheroidal graphite cast iron;low-alloy,austempered moldable iron
- Spheroidal graphite cast iron;Meehanite quality
- Spheroidal graphite cast iron;unalloyed

- Malleable castings
- Stainless steel castings;ferritic
- Steel castings;cold-tough
- Steel castings;creep resistant at high temperatures
- Steel castings;for flame and induction hardening
- Steel castings;heat-resistant
- Steel castings;heat-treatable
- Steel castings;high alloy
- Steel castings;low alloy
- Steel castings;non-magnetizing
- Steel castings;other
- Steel castings;stainless
- Steel castings;unalloyed

- Chill castings;alloyed

- Aluminium castings
- Brass castings
- Bronze castings
- Copper castings
- Magnesium castings
- Nickel castings
- Non-ferrous metal casting(NF metal casting);other
- Titanium castings
- Zinc castings

- Foundry products;special
- Memory alloys
- Powdered metal injection moulding

- Friction linings,sintered friction linings,brake bands
- Sintered bearings
- Sintered compacts
- Sintered cutting tools
- Sintered filters
- Sintered parts;other
- Sintered powder magnets

- Bushes;forged
- Discs and perforated discs;forged
- Open-die forgings;other
- Precision-forged parts
- Rings;forged
- Rods;forged
- Shafts;forged
- Shapes,forged

- Drop-forged parts;other
- Hot-pressed parts
- Precision forgings
- Safety parts;drop-forged
- Upset forgings

- Aluminium drop-forged parts
- Cold-extruded parts
- Cold-rolled parts
- Extruded parts;other
- Hot-extruded parts
- Hot-rolled parts
- Massive forming products;other
- Rolled rings
- Semicold-extruded parts
- Stamped material

- Deep drawn parts
- Pressed metal parts
- Pressing products;other
- Spun metal parts

- Bent metal parts
- Metal chains
- Metal sections
- Pipe fittings
- Pipe shaping,pipe working(ancillary supplier services)
- Rolled metal parts
- Special metal-forming parts;other

- Jet-cut parts made of metal
- Laser-cut parts made of metal
- Nibbled metal parts
- Parts separated without cutting;other
- Precision metal stampings
- Punched metal parts

- Automatic lathe work

- CNC turned parts made of nonferrous metals
- CNC turned parts made of nonmetals
- CNC turned parts made of steel
- Large-dimension turned parts

- Mass turned parts
- Precision turned parts made of nonferrous metals
- Precision turned parts made of nonmetels
- Precision turned parts made of steel
- Turned parts;other

- Automatic milling parts
- CNC milled parts
- Mass milling parts
- Milled parts;other
- Planed and planer-milled parts
- Precision milling parts

- Bored parts
- Broached parts
- Deep-drilled parts
- Drilling parts;other
- Precision drilling parts
- Threaded parts(machined parts)
- Whirled parts

- Flat-ground parts
- Ground parts;other
- Honed and lapped parts
- Parts manufactured by electrical discharge machining(wire and electrodes)
- Precision-ground parts
- Round-ground parts

- Machined parts;other
- Precision components;other
- Precision steel shafts
- Spindles

- Compact machined parts made of polyurethane
- Injection mouldings,injection moulded articles
- Moulded Interconnected Devices(MID)
- Moulded plastic articles with inserts
- Plastic blow mouldings
- Plastic dip mouldings(articles produced by dipping)
- Plastic mouldings
- Plastic mouldings;other
- Plastic pressed parts
- Rotomoulded and centrifugal cast plastic parts
- Sintered plastic parts
- Synthetic foam parts,injection mouldings
- Thermoformed plastic parts

- Flexible tubes made of compound materials and woven plastics
- Pipes;plastic
- Plastic sheeting
- Sections;plastic
- Semifinished plastic products;other
- Sheets and panels;plastic

- ARP parts/aramide reinforced plastics
- CRP parts/carbon reinforced plastics
- GMT parts/glass-mat reinforced parts
- GRP parts/glass reinforced plastics
- Laminated plastic parts
- Pultrusion-produced parts
- Reinforced plastic parts;other

- Chains;plastic
- Containers and tanks;plastic
- Hoses made of compound materials and woven plastics
- Hoses;plastic
- Machined parts and special products made of plastics;other
- Packaging systems,complete packages(plastics)
- Pallets,folding boxes,storage boxes made of plastic
- Plastic ball-bearings,plastic bearings,plastic bearing shells
- Plastic balls
- Protective spirals for tubes made of plastic,tube protection
- Ready-made packaging,foamed moulded packaging,reliable and safe packaging
- Rollers;plastic
- Rolls;plastic

- Silicon injection mouldings
- Silicon mouldings
- Silicone parts;other
- Silicone profile elements;extruded

- Blow moulding of hollow plastic parts
- Casting of plastics
- Compression moulding of plastics
- Foam moulding of plastics
- Forming in plastics processing;other
- GRP processing,glass-fiber renforcing of plastic
- Injection moulding of plastics
- Insert technology/metal-plastic hybrid technology(extrusion-coat metal parts with plastic)
- Outsert technology/metal-plastic hybrid technology(spray-coat plastic onto metal parts)
- Plastic extrusions,plastic extrudes
- Thermoforming of plastics

- Joining of plastic parts
- Machining of plastic parts
- Plastics processing;other
- Processing of high-performance plastics
- Stamping and cutting of plastic parts

- Coating of plastic parts
- Embossing of plastic parts
- Flock-coating of plastic parts
- Metallizing of plastic parts
- Printing of plastic parts

- Bellows
- Bellows of rubber
- Conveyor belts of rubber
- Driving elements made of rubber(incl. V-belts,toothed belts)
- Formed parts made of rubber/polyurethane(incl. Rubber buffers)
- Hoses of rubber
- Rubber parts;other
- Rubber pneumatic dampers
- Rubber slabs,polyurethane slabs
- Rubber-metal links
- Sections of rubber
- Shaped parts of cellular rubber
- Shaped parts of foram rubber

- Flock-coating of rubber parts
- Joining of rubber parts
- Mechanical processing of rubber parts(punching,milling,drilling,cutting etc.)
- Rubber processing;other
- Rubberizing
- Vulcanizing of rubber parts

- Bought-in parts made of other materials
- Ceramic parts
- Ceramic substrates and components;workable
- Cork parts
- Fabric parts
- Glass parts
- Parts made of asbestos substitutes
- Wooden parts

- Assembled sheet metal parts made of black steel
- Assembled sheet metal parts made of coated steel
- Assembled sheet metal parts made of high-grade steel
- Assembled sheet-metal parts;other
- Disk springs
- Hinges
- Laser-cut parts(structural componets,sheet metals,springs)
- Precision machined sheet-metal parts
- Sheet metal housings
- Sheet metal parts(V-belt pulleys,amongst others)
- Sheet-metal and wire products,springs;other
- Sheet-metal ducts and guards
- Sheet-metal springs
- Wire bending parts
- Wire cables
- Wire coils
- Wire components
- Wire products;other
- Wire springs

- Heavy structures(from subcontractors)
- Metal structures;other
- Parts and structures(from subcontractors)
- Structures for production plants(from subcontractors)
- Welded constructions,steel plate towers,lightweight steel constructions

- Apparatus,vessels,tanks(non-pressurized)
- Apparatus,vessels,tanks(pressurized)
- Hydraulic accumulators
- Pipework
- Rolls made of metal,roll barrels

- Models for foundries
- Models for industrial design
- Prototypes
- Rapid Prototyping products

- Accessories for mould and die construction
- Blowing and vacuum froming moulds for plastic articles
- Cutting dies and punching tools,forming and drawing tools
- Deformation and deep drawing dies
- Diecasting dies
- Dies for powder metallurgy
- Embossing dies
- Forging tools(dies)
- Injection moulding dies
- Injection moulding,extrusion and pressing moulds for plastic and caoutchouc articles
- Jigs and fixtures for mould and die construction
- Moulds for ceramics and glass articles
- Permanent moulds and moulds for foundries

- Dies(supply parts)
- Industrial knives and blades
- Standards and standard parts;other
- Standards for die construction
- Standards for jigs and fixtures construction
- Standards for machine and apparatus construction
- Standards for mould construction

- Bolt accessories
- Bolts and screws
- Clips
- Closures
- Electro-mechanical and electronic locking systems
- Fastening and assembly aids
- Feather keys and sunk tapered keys
- Hose connectors,hose couplings
- Hydraulic and pneumatic connectors,nipples
- Iron mounting
- Joining elements;other
- Locks
- Nuts
- Operator components
- Rivets
- Tapered pins,grooved pins,parallel pins

- Ball-bearings in steel and other metals,shifting balls
- Gear units(incl. Planetary and turbo gears)
- Hydraulic rotational screw fittings
- Machine components;other
- Sealing devices
- Wheels and rolls

- Ball bearings
- Ball bearings,special models
- Roller bearing parts and roller bearing components
- Roller bearings
- Rolling contact bearings;other
- Self-aligning roller bearings

- Accessories for housing and switch cabinet construction;other
- Assembly and securing material for the construction of housings and switch cabinets
- Chassis for housing and switch cabinet construction
- Empty housings
- Front panels for housing and switch cabinet construction
- Housing handles and locks
- Trade and other signs

- Assemblies and metal constructions;other
- Flexible fibre optic cable;ready-made
- Optical modules and components;other
- Supplied products for switchgear construction(electronics field)
- Supplied products for switchgear construction(low voltage/MCR field)
- Supplied products for switchgear construction(power/energy field)

- Air conditioning mountings
- Motor vehicle catalysts,catalyst components
- Motor vehicle clutches,cluth components
- Motor vehicle components for drives;other
- Motor vehicle differential gears,differential gear components
- Motor vehicle drive shafts,drive shaft components
- Motor vehicle engine components
- Motor vehicle exhaust gas system components
- Motor vehicle filters,filter parts,oil filters,fuel filters
- Motor vehicle gearing,automatic transmissions,gear components
- Motor vehicle radiators,radiator components

- Motor vehicle axles,axle components
- Motor vehicle chassis parts
- Motor vehicle chassis;chassis components
- Motor vehicle components for steering and chassis;other
- Motor vehicle spring systems and vibration absorbers
- Motor vehicle steering,steering parts
- Motor vehicle wheel suspensions;wheel suspension components

- Body parts for vehicles
- Doors for vehicles
- Hydraulic units for vehicles
- Locks and closes for vehicles
- Motor vehicle components for bodies and superstructure;other
- Motor vehicle fittings
- Motor vehicle floor plates
- Motor vehicle mountings
- Superstructures for vehicles

- Accessories for electrical vehicle equipment and vehicles safety
- Electric and electronic equipment for vehicles
- Indicator and recording systems for vehicles
- Motor vehicle lighting technology equipment

- Airbags
- Air-conditioning systems for vehicles
- Heating installations for vehicles,stationary heatings
- Motor vehicle components for interior fittings and safety
- Safety belts
- Seats and parts for seats

- Cast parts for vehicle construction(iron,steel,aluminium or magnesium)
- Component parts for tractors and agricultural machines
- Joining elements,rivets,bolts for vehicle manufacture
- Laminated panels for vehicle manufacture
- Moulded rubber parts for vehicle construction
- Mouldings,stampings,and deep-drawing parts for vehicle manufacture
- Plastic panels,plastic parts for vehicle manufacture
- Polyurethane cast resin and sealing foams for vehicle construction
- Precision blanking parts for vehicle manufacture
- Profile sections for vehicle manufacture
- Rubber-metal connections for vehicle construction
- Sealing elements,membranes,rubber composites for vehicle construction
- Sheet metal parts for vehicle manufacture
- Stampings made of magnetic steel sheets for vehicle construction(electric motor parts)
- Tubes,brake hoses,fuel hoses,air tubes for vehicles
- Welded parts for vehicle manufacture

- Brake disks
- Brake linings
- Brake shoes
- Components for construction machinery
- Disk brakes
- Drum brakes
- Motor vehicle brakes,brake components;other
- Motor vehicle components;other

- Cast iron(engineering materials)
- Cast steel(engineering materials)
- Iron and steel products;other
- New ferrous materials;other

- Clad steel plate
- Reinforcing bars
- Semifinished products(rolled steel)
- Sheet
- Special sections
- Steel bars
- Structural shapes,incl. IPE profiles and mine supports
- Wire rods

- Cast iron pipes
- Steel tubes/pipes;seamless or welded
- Tubes/pipes of stainless steel

- Anti-friction bearing steels
- Ball bearing steels
- Highly heat-resistant steels
- High-speed tool steels
- Special structural steels
- Stainless steel;other
- Stainless steels
- Tool steels
- Weathering-resistant steels

- Bright steel(non-alloy steels in St, C and free-cutting qualities)
- Cold-rolled sections from hot and cold-rolling strip
- Cold-rolled sections with treated surface
- Cold-rolled strip with bright surface
- Cold-rolled strip with treated surface
- Cylindrical tubing for hydraulics and pneumatics
- Drawn and cold-rolled steel products;other
- Precision steel tubing

- Finished wire products(e.g. wire bending parts)
- Iron and steel wire for further processing
- Spring-steel wire
- Wire and wire products made of steel;other

- Aluminium and aluminium alloys in pigs and shapes
- Non-ferrous magnetic materials

- Bare flex and ropes
- Extruded sections
- Pipes
- Rods
- Semifinished roll-bonded metal products
- Wires

- Non-ferrous metal products;other
- Technical extrusion parts

- Semifinished galvanised metal products
- Surface-treated simifinished metal products;other

- Aluminium alloys;other
- Aluminium composites
- Aluminium foam
- Aluminium sections;processed
- Cast aluminium alloys
- Magnesium-aluminium alloys
- Titanium alloys
- Wrought aluminium alloys

- Copper forgeable alloys
- Copper-aluminium alloys(aluminium-bronzes)
- Copperj-tin alloys(bronzes)
- Copper-nickel alloys
- Copper-nickel-zinc alloys(German silver)
- Copper-zinc alloys(brasses)

- Cobalt-based alloys
- Copper
- Heavy metals;other
- Nickel-based alloys
- Sintered metals/powder metallurgy
- Zinc

- Aluminium titanate
- Engineering alumina ceramics
- Industrial ceramics;fibre-reinforced
- Industrial ceramics;other
- Silicon carbide;silica-infiltrated
- Silicon carbide;sintered
- Silicon nitride
- Silicon nitride;hot-pressed
- Silicon nitride;reaction-bound
- Silicon nitride;sintered
- Zironium oxide;partly stabilised
- Zironium oxide;tetragonal polycrystalline

- Alumina ceramics for electronics
- Aluminium nitride ceramics for electronics
- Ceramics for electronics;other
- Cutting ceramics
- Piezo-ceramics

- Ceramic materials;other
- Glass ceramics
- High-temperature isolation materials

- Glasses
- Mineral materials;other
- Quartz materials

- Polymer materials (Industrial Plastics)

-
- Polyamides PA
- Polyetheretherketone PEEK
- Polyethylene PE
- Polyetrafluorethylene PTFE
- Thermoplastic polyurethane elastomers TPU

- Fire/flame-protected thermosetting plastics
- Highly heat-resistant thermosetting plastics
- Highly rigid thermosetting plastics
- Polyester resin,duroplastic resins
- Polymer materials;expanded(thermosetting)
- Semifinished thermoplastic products
- Semifinished thermosetting plastic products

- Chemical-resistant elastomer materials
- Elastomer materials with special properties
- Elastomer materials;expanded
- Elastomers;other
- Electrically conductive elastomer materials
- Flame-resistant elastomer materials
- Highly damping elastomer materials
- Highly wear-resistant elastomer materials
- Non-ageing and weathering-resistant elastomer materials
- Plastics/rubber composites
- Snappy(highly elastic) elastomer materials
- Temperature-resistant elastomer materials

- Silicones,silcone rubber
- Sprial jet mills for the micronization of materials in small quantities
- Vibration isolation;polymer materials for

- Aramide-fibre reinforced plastics(ARP)
- Carbon-fibre reinforced plastics(CRP)
- Fibre composites;other
- Glass-fibre reinforced plastics(GRP)
- Metal-fibre reinforced plastics(whisker,steel,beryllium), MRP reinforced plastics
- Reinforcing materials,fibers(glass fibers,metal fibers,quartz fibers,oxide fibers)

- Anodic oxidisation
- Galvanic coatings
- Hard anodising,plasma-chemical oxide ceramics
- Metal spray coating(plasma,flame)
- Metal/ceramics composite materials
- Metal/foamed materials,composites
- Metal/metal composite materials
- Metal/plastic composite materials
- Thin films

- Nuclear materials
- Protective coating materials
- Sandwich composite systems

- Composite materials;other
- Composites consisting of moulded or shaped parts(load accepting or transmitting elements)
- Fibrous materials(textiles,materials,needle-felt made of synthetic fibres)
- Nano-composites(s.a. 5.8.3)
- Nano-composites(s.a. 5.8.4)
- Nano-composites(s.a. 5.8.5)
- Nano-composites(s.a. 5.8.6)
- Nano-composites(s.a. 5.8.7)
- Plastic composite materials
- Structural composites(reinforcement structures,integral stiffening components)

- Bimetals and thermostatic bimetals(materials for electrical engineering)
- Contact materials for electrical engineering
- Materials for electrical engineering;other
- Parts and accessories for materials for electrical engineering
- Permanent magnets and directional systems for electrical engineering
- Piezoelectric materials
- Soft magnetic materials for electrical engineering

- Casting compounds,putties and cast resins;polyester/polyurethane,epoxy resins,methacrylates
- Electrical insulation materials;other
- Electrical pressboard and pressboard combinations
- Glass-bonded insulating materials and fibre glass
- Hard paper and hard fabric
- Insulating sleeves and strips
- Natural insulating materials
- Plastic mouldings
- Plastics,artificial resins

- Compression testing devices
- Material testing apparatus and equipment;other
- Pore testing devices
- Test equipment and instruments for pc board production

- Complete outsourcing of other products
- Complete outsourcing production of electronic equipment,computers and telecommunication equipment
- Complete outsourcing production of machines and plants
- Complete outsourcing production of vehicle

- Building of electromechanical components and assemblies
- Building of special electrical or electronic assemblies
- Building of special handling devices
- Building of special hydraulic or pneumatic components and assemblies
- Building of special jigs
- Building of special mechanical individual components and assemblies
- Building of special precision mechanical or optical components and assemblies
- Building of special-purpose assemblies for transport,conveying or materials handling equipment
- Special manufacture of other products

- Chemical surface coatings(contract coating)
- Chrome-free conversion of aluminium surfaces
- Deburring or cleaning of castings for the subcontracting industry
- Friction welding
- Galvanic and thermal coatings for the subcontracting industry
- Laser wage work
- Plain rollers/solid rollers for subcontractors
- Production services for surface treatment;other
- Production services soldering for the subcontracting industry
- Production services thermal treatment of metal/steel
- Production,processing and manufacture of quality tested and finish machined components
- PVD surface coating
- Surface coating of magnesium
- Teflon coatings,fluoropolymer coatings,PTFE coatings
- Wage work in the sheet metal working-automobile industry sector

- Construction and manufacture of models and tool models
- Outsourcing product development;other
- Rapid Prototyping,prototype development and prototype construction

- Complete system supply(supplier responsible for design,development and production),sector-independent
- System supply including responsibility for quality;sector-independent

- Automotive system supply for brakes
- Automotive system supply for drive trains and steering
- Automotive system supply for electrical equipment and electronics
- Automotive system supply for safety systems
- Automotive system supply for structural components,bodies
- Automotive system supply;other
- System supply for automation technology and measuring technology
- System supply for embedded systems and displays
- System supply for mechanical engineering

- Automobile recycling
- Delivery of ready-to-commission,packaged system components including accessories
- Installations,assembling in the manufacturing chain
- Logistics coordination for the subcontracting industry
- Logistics for spare parts supply(subcontracting industry)
- Production synchronous delivery in the field of subcontracting/Just-in-time delivery
- Stockholding/placing at disposal for call-off
- System suppliers;other
- System supply for the building industry

- Calculation, FEM calculation for the subcontracting industry
- Consultancy,planning,engineering and development for the field of subcontracting
- Materials and component characterisation for the subcontracting industry
- Modelling and simulation for the subcontracting industry(4D modelling)
- Modelling and simulation for the subcontracting industry(5D modelling)
- Modelling and simulation for the subcontracting industry(6D modelling)
- Optimization of construction processes and production processes for subcontracted products
- Product form,design,construction for the subcontracting industry
- Production engineering consultancy for the supplied product
- Studies and conception of new products for the subcontracting industry

- Analyses,damage analyses and certificates for the field of material technology
- Characterisation of materials
- Consulting on materials
- Examination of materials
- Material analysis using material characteristic values and performance characteristics
- Material recycling and upcycling
- Material testing for metallic materials
- Materials development
- Process consultation for the field of materials technology
- Services for the field of materials technology;other
- Testing of materials and work pieces

- Associations,organizations for the field of subcontracting
- Databases for materials information
- Information processing for the subcontracting industry
- Information services for the field of materials technology
- On-line offers and quotations for the subcontracting industry
- Organizations in the field of materials technology
- Publishers in the field of iron,steel and non-ferrous metals,engineering materials
- Technical publications for the field of subcontracting
- Technical publishers for the field of subcontracting