“To the guest, disposable paper cup with a one person, ran out of throw them, clean and convenient. Little imagine, disposable paper cup, you can’t drink the first cup of water.” Recently, a news in the Internet. Quality inspection, experts warn production of disposable paper cups, in order to prevent water penetration, paper cups is usually on the wall with a thin layer of wax. So, do not use disposable paper cup to drink hot water. The personage inside course of study reminds, when choosing paper cup the best reference “a smell two touch three” : first paper cup smell no pungent smell, second cup feels more hard, and finally to the light to watch paper evenly without impurities.