I sold Gun Safes for awhile and back in 05 we started seeing increases in the price of steel due to increased consumption by China. The increase was blamed on the Three Gorges Dam project which is called the world's largest construction project since the Great Wall. Not only are the materials needed for the dam construction , but also for building housing for all the people the reservoirs will displace. Keep in mind that these reservoirs are to support traffic of 10,000 ton ocean going vessels.
Sinkerman's point about the batteries is on the money. Lead-acid batteries are the number one purpose for lead. I don't about bicycles but China has the world's fastest growing automobile market which means lots of batteries.
Strategic Materials ? Yes, The CIA was warning of China's increase in military production in 04. Reports now put their increases in Military spending at 20%. Now, they tell us that China is holding joint military exercises with Russia. In my opinion, this all means that we're headed for some tragic confrontations down the road.