What are the key components of the Purchase & Sales contracts, the agreed Product, Quantity, Quality, Price, Currency, Payment terms, Delivery period, Delivery terms (FOB / CIF / CFR), Origin, INCOterms and Applicable law are key besides many more clauses. Product swaps (Geographical), VAT, Duties as well as A > B > C > D transactions, are discussed and Commercial contracts versus Transport and Storage agreements.