content: When I open it, I start to feel disappointed. Some unknown black oil remains on two cups and all handles. I guess the black oil is used for stainless polishing. It is ok to wipe clean the black oil. Then, I found welding brown-flat spots inside all cups surface. It doesn't look nice but still acceptable. Finally, I found the 1-cup edge is uneven with poor finishing. Maybe it is just an defective item. However, till I see the words, "made in China", with the unknown black oil in my hand, I feel more disappointed.