How should foreign trade novices respond to customers' inquiries and ask what questions?

Whether you are a novice or an old hand, the first thing to reply to an inquiry is to say hello or something, say hello and care, thank you for your inquiry about our products ... thank you for your inquiry, and then answer your questions according to the requirements of your inquiry. Be sure to answer in detail, but don't be wordy. I'm a novice, too. During the three-month probation period, I only developed four new customers. It's all luck I think I should be polite and modest. The client will be happy to reply to you.