Listening Quiz: Tìm Nguyên Nhân Gốc Rễ Của Vấn Đề Sản Phẩm – Medium Level

1. What is the main topic of the conversation?
2. What did John find was causing the products to break too easily?
3. What did the supplier do recently?
4. Why does Laura say, “That explains the weak products we see”?
5. What will John most likely do next?

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