Packaging engineering at its best

In the US, you see some necessary compromises when it comes to packaging.  Some space is wasted in order to protect the product, for example, in bags of potato chips, a certain volume is air to keep the chips from turning into potato dust.  

In China, this is taken to a whole other level with cereals.  You see a relatively small box of cereal.  You expect at least 75% of the box to be ... cereal.  What you find instead is a sealed bag that takes up 50% of the volume in the box filled 50% with cereal.  This is why Chinese people are thin.  Calorie-dense foods like hamburgers and potato chips are just too damn expensive!