Various commodities and services are exchanged among the countries of the world. Such goods and services can be classified into the following major groups:
1. Heavy Machines and Equipment: Tractors, aircraft, ships, petro-chemical components, rail engines, automobile parts, etc.
2. Manufactured Consumer Goods: Textiles, shoes, cooking utensils, book, beverages, electronics, etc.
3. Raw Metals: Tin, columbite, copper, lead, zinc, etc.
4. Agricultural Commodities: Rubber, cocoa, coffee, cotton, wheat, groundnut, etc.
5. Forest Products: Timber, plywood, etc.
6. Chemicals and petrol-chemicals.
7. Finance, insurance and banking.
8. Cargo handling, packing and shipping.
9. Telecommunication/information services.
10. Technology and expertise.
