CLASSIFICATION SYSTEM BY FIELD AND SUB-FIELD OF EXPERTISE SUPPLIERS REGISTRY OF GOODS AND SERVICES ENAP GROUP OF COMPANIES I. Suppliers are classified in three groups: Classification Equipments, materials and spare parts Works Services II. Each group is classified in fields of expertise, as follows: Classification Equipments, materials and spare parts Works Services Equipments Materials and Spare Parts of the industry General Materials Civil Works Mechanical Works Electric, Electronic and Instrumentation Works Foods Sample Analysis and Treatments Leasings Cleaning Consulting, Engineering Training in Administration and Services Computer Services Communications and Telephone Engineering Studies Manufacturing of Equipments and Materials Photocopying and Photography Services Loundry Maintenance Government Organizations Outsourcing Professionals and Technicians Publicity and Promotions Insurance Health Services Maritime Services Customs Services Utilities Financial Services Oil Services Environmental Health Subscriptions and Editing Transport Waste Treatment Trips & Catering

III. Each field of expertise is classified as follows: Classification: Equipments, materials and spare parts Equipments Pumps and Motor Pumps Heating, Cooling and Air Conditioning Equipments Computer and Information Systems, Equipments and Supplies Telephone and Communication Equipments Fire Protection Equipments Electric Equipments and Elements Household Appliances Thermal Generation equipments, Furnaces and Boilers Hydraulic Equipments Instrumentation and Control Equipments Heat Exchangers Laboratory Equipment Heavy Duty Machinery Vessels and Seabord Terminal Equipments Drilling Equipments and Elements Radioactive Equipments and Elements Recreational and Fitness Equipments Welding, Cutting and Roughing, Equipments and Supplies Water Treatment Equipments Motors and Compressors Materials and Spare Parts of the industry Furnaces and Boilers, Spare Parts and Fittings Oils, Lubricants and Greases Adhesives and Sealers Agricultural Chemicals, Fertilisers, Herbicides, Fungicides Insulation, Mineral Wool, Coatings Wires, Cables, Cords Seats and Bases Heat-Shrunk Covers and Belts Fuel Oil Supply Industrial Cleaning Supplies Spare Parts for Motors, Pumps and Valves Industrial Safety Elements Transmission Elements Fastening Elements Elements for Maneuver, Hawsers and Cargo Slings Packagings, Containers and Accessories Industrial Filters Fittings and Flanges Gas Manual and Mechanical Tools Concrete and Precast Concrete Ring Joints and Gaskets Hoses and Flexible tubings Building Materials Electric Materials Plastic Materials and Elements Hardware supplies Lighting Materials Instrumentation and Control Products

(cont ) Materials and Spare Parts of the industry (cont ) Computer Materials and Supplies Laboratory Materials and Supplies Medical, Dental and Pharmaceutical Supplies Metallurgical Materials Heat Resistant Materials Sulzer Train Materials, Parts and Spare Parts Batteries and Chargers Chemical Products Vehicle Accessories and Spare Parts Roller Bearings and grips Personal Safety Clothing Sealers and O-Rings Tubing, Casing and Accessories Industrial Valves and Control Valves General Materials Office Supplies and general equipment Cleaning Supplies Office Furniture Administrative Personnel Clothing and others Classification: Works Civil Works Thermal Insulation Industrial Anchorages Sanding, Tarring and Painting Street and Road Construction Construction of Buildings and Camps Foundations Metal Sheds, Fences and Others Refractory Installation Earthworks and Excavations Construction of Docks and Bridges Demolitions Fluvial or Ocean Bed Extraction Works Impermeabilization Works Maritime and Fluvial Works Urbanization and Public Services Works Construction of Safety Nets Industrial Coatings Epoxy Coatings Mechanical Works Construction and Installation of Air Conditioning and Heating Equipments Construction and Installation of Estructures and Equipments Construction and Installation of Tanks and Towers Construction and Installation of Furnaces and Boilers Construction and Installation of Hydraulic Works Construction and Installation of Pipes and Oilpipes Construction and Installation of Piping Process Areas

Electric, Electronic and Instrumentation Works Installation of Optic Fiber Nets Installation of Telephone Systems Electronic and Instrumental Assembly Electrical Assembly Low and Medium Voltage Electrical Works High Voltage electrical Works Classification: Services Foods Restaurant Service for Personnel Special Services, Groceries, Cocktail Sample Analysis and Treatments Laboratory Tests and Sampling Leasings Leasing of Scaffolds Leasing of Vehicles Leasing of Buildings Leasing of Camps Leasing of Vessels Leasing of Maritime Equipment Leasing of Computer Equipments Leasing of Heavy Duty Machinery Leasing of Photocopiers Cleaning Cleaning of Buildings, Streets and Others Industrial Cleaning, Chemical Washing Cleaning of Offices Consulting, Engineering Administration Consulting Architecture, Urban Planning, Landscape, property valuations Auditing and Accounting Consulting Quality Control and ISO Standards Consulting Foreign Trade Consulting Oceanographic Studies and Consulting Exploration Studies Financial Consulting Geological Studies Information Technology Consulting Maritime and Ships Administration Consulting Marketing and Publicity Consulting Human Resources Consulting Inspection and Certification Services Legal and Labor Consulting Environmental Consulting Prevention of Risks Consulting

Training in Administration and Services Training in Administration and Finance Training in Computers and Information Systems Training in Environment and Quality Management Training in Languages and Translation Training in Engineering and Processes Post Graduate Qualifications Training in Human Resources Technical Training Training in Personnel Administration Other Trainings Computer Services Installation of Computer Networks Development of Computer Systems Software and Licenses Supply and Maintenance Communications and Telephone Communications and Telephone Services Engineering Studies Civil Engineering Electrical Engineering Electronic Engineering Mechanical Engineering Naval Engineering Processes Engineering Studies in Topography and Measurement of Land Surface Soil Mechanics Manufacturing of Equipments and Materials Boilermaking Foundry Ship Building and Repair Die Making Photocopying and Photography Services Map and Drawing Digitization Printing, Binding Photocopy and Copies of Plans Photography and Framing Loundry Industrial Loundry Services for Safety Elements Loundry Services

Maintenance Chemical Cleaning and Maintenance of Equipments Calibration and Maintenance of Equipments and Scales Building and Outdoor Areas Maintenance Electronic and Instrumentation Maintenance Ships and Terminal Maintenance Information Networks and Computer Equipment Maintenance Industrial Facilities, Chimeneys and Tanks Maintenance Green Areas and Garden Maintenance Mechanical Maintenance Civil Works Maintenance Maintenance of Oil and Gas Pipes Oil Wells Maintenance Predictive Maintenance Vehicle and Heavy Duty Machinery Maintenance Repair and Maintenance of Air Conditioning Equipment Electrical Maintenance Electromechanical Maintenance Maintenance of Medical Equipment Maintenance of Office Equipments Maintenance of Turbine Engines Maintenance of Insulating Refractories Maintenance and Repair of Fences Other Maintenance Government Organizations Government Organizations Outsourcing Services for Recreational and Fitness Activities Services of Storage Operations Messenger, Chauffeur, Support Services Security and Surveillance Services Professionals and Technicians Professional, Technical and Other Services Publicity and Promotions Publicity and Promotional Services Insurance Insurance Companies

Health Services Pharmacies Medical Center, Clinics, Hospitals Medical Laboratories Medical and Paramedical Services Mutual Benefits Maritime Services Procurement of Ships Maritime and Submarine Inspection Stevedoring Services Boatage Services Vessel and Towage Services and Others Customs Services Clearance Services -Customs Utilities Water, Electricity and Gas Supply Financial Services Financial Services, Banks Oil Services Drilling and Sounding Services Environmental Health Plague Control Remediation and Cleaning Subscriptions and Editing Publications, Books, Journals, Norms Transport Air Freight and Personnel Air Transport Hazardous Materials Transportation Mail and Parcels Personnel and Cargo Maritime and Fluvial Transportation Transport of Crude and Clean Products Transport of Industrial Wastes Cargo Road Transport Personnel Road Transport

Waste Treatment Treatment of sewages Treatment of Industrial Waters Treatment of Liquid Wastes Treatment of Solid Wastes Trips & Catering Travel Agencies Catering and Lodging