前言 Unit 1 An Overview of Refrigeration & Air Conditioning Unit 2 Established Enterprises Unit 3 Facilities of Refrigeration & Air Conditioning Unit 4 Marketing Promotion of Refrigeration & Air Conditioning Unit 5 Market Share of Refrigeration & Air Conditioning Unit 6 Industry Regulations Unit 7 Industry Communication Unit 8 The Industry Frontline Appendix I Key to Exercises Appendix II Scripts for Listening Appendix III Chinese Translation of the Reading Passages Appendix IV Glossary