Unit 1 Background Knowledge Unit 2 Specimen Contract Unit 3 Purchase Contract Unit 4 Sales Contract Unit 5 Sales Confirmation Unit 6 Exclusive Sales Agreement Unit 7 Contract for Work Unit 8 A Finance Lease Agreement Unit 9 Contract for Employment Unit 10 Joint Operation Agreement Unit 11 Export Documentation Unit 12 Bankers' commercial Credits Unit 13 Kinds of Bankers' Commercial Credits Unit 14 Documentary Credit Unit 15 Bills of Exchange Unit 16 Bills of Exchange and Letters of Credit Unit 17 Documentary Collection Unit 18 Shippirg--BiU of Lading Unit 19 Marine Insurance Unit 20 Settlement of Dispute Key to the Exercises