Listening Quiz: Thủ Tục Hải Quan Cho Hàng Mẫu Không Có Giá Trị Thương Mại – Advanced Level

1. What is the conversation mainly about?
2. What document does Mark say Jessica should provide with the samples?
3. According to Mark, what is usually true about customs duty for these samples?
4. What can be inferred about the samples Jessica wants to send?
5. What may customs do if they doubt the value of the samples?

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