answer: #Person1# tells #Person2# the advantages of #Person1#'s factory over other plastics ones, but #Person1# cannot answer #Person2#'s question about the cost.
documents: #Person1#: Thank you for your visit to our company. I'd like to make an introduction for you. Is there anything in particular you'd like to know?
  #Person2#: Your company has a very good reputation, and I have been planning to visit it for a long time. What's the advantage of your factory over other plastics ones?
  #Person1#: Our production speed is almost twice the industry-wide average. And we've already expanded the factory this year.
  #Person2#: Could you tell me the cost of production per unit?
  #Person1#: I'm not familiar with that part. Let me call someone in charge.