2.2 What Is Customer service Key points: customer service; the components of customer service Difficult points: the components of customer service Requirements By the end of this lesson, you should be able to understand the role of customer service describe the components of customer service discuss the important role of logistic in customer services。2.2 What Is Customer Service Key points: customer service; the components of customer service Difficult points: the components of customer service Requirements： By the end of this lesson, you should be able to understand the role of customer service. describe the components of customer service. discuss the important role of logistic in customer services