1.1 Basic Knowledge of Business Letters Writing+ 1.2 Fax and E-mail+ 2.1 The Application of 7C Writing Principle in International Business Letters + 2.2 Writing Principles of International Business Letters in the Era of Trade Facilitation + 2.3 Writing Strategies of International Business Letters I + 2.4 Writing Strategies of International Business Letters II+ 2.5 Customer-centered Communication Strategy for International Business Letters + 2.6 The Application of Politeness Strategies in International Business Letters + 2.7 The Use of Vague Language in International Business Letters+ 2.8 The Rhetorical Differences Between Traditional and Modern Business Letters + 3.1 Establishment of Business Relations I+ 3.2 Establishment of Business Relations II+ 3.3 Enquiry and Offer + 3.4 Counter-offer+ 3.5 Sample Charges I+ 3.6 Sample Charges II + 3.7 Shipping I+ 3.8 Shipping II+ 3.9 Payment+ 3.10 Claims and Settlement+