A: Can I help you?
B: Yes, we bought twenty electric heaters in your store three days ago. But now two of them are out of work.
A: Oh, I'm so sorry to hear that. Could you tell me the brand?
B: Yes, it's Caihong-150 Electric Heaters.
A: What's the matter?
B: The problem is that it doesn't heat after we turn on electricity.
A: Please bring the receipt and the warranty card with you. We'll be delighted to repair or replace them.
B:Thanks a lot.