What is the woman concerned about?

W: I’m worried about the production rate on assembly line number three. The machine that seals the mobile phone boxes isn’t running as fast as it should, and it’s slowing down the whole process.
M1: Oh, we’ve had trouble with that machine in the past. Instead of having it repaired again, I think we’d better just replace it.
M2: I agree. But we should try to get a new one put in as soon as possible, or we might have to shut down that assembly line.
W: OK, I’ll call the company that supplies that equipment.
M1: Yes, see how soon we can get it installed.
62.What is the woman concerned about?
63.What do the men suggest?
64.What does the woman say she will do?