YSK that if your Amazon account does not show an option to use minimal packaging (availability determined by your location, I think), you can still chat with their CS to indicate that option for all your future orders
from /r/YouShouldKnow
YSK，如果你的亚马逊账户没有显示使用最小包装的选项（我想是由你的位置决定的），你仍然可以和他们的CS聊天，为你未来的所有订单指明这个选项。