Design:Techno 2100 — Steel Making
Steel making is a process which can be described as amazing. Like no other substances， steel has changed our world. It has allowed us to expand frontiers， go faster， live longer. Indeed， a lot of us rely on steel. And there're now more than 2000 steel specifications relating to strength， shape， thickness and coating. Steel is the most recyclable material in the world. In America alone， last year we recycled almost 20 billion cans， 13 million cars and 45 million appliances. Science has changed the quality of steel.
- Added：2006
- Country：America
- Duration：30
- Time of update：2011/8/23 15:30:37