A:I'd have a look at some pots and pans.
B:We've got several kinds. All are made of different materials.
A:What kind is most durable, please?
B:Well, here is one made of duralumin. That's cheap and durable. Over竹’ere we've also got some made of stainless steel, and those over there are enamel ones.
A:I'll have the stainless ones. They look very solid.
B:Yes, sir. Stainless steel products are always popular.