Interesting. I compared China's imports from 2001 to imports from 2011. Quite revealing how much infrastructure they built. In 2001 imports mainly consist of parts and China acts as an assembly line. Cathode tubes make up 1.25% of all imports revealing somewhat outdated tech base. Contrastingly in 2011, focus shifted on importing basic materials and producing things internally with great increase in imports of energy and foodstuffs.

Pretty awesome how you can illustrate technological progress of the country by imports/exports.