China is "The World's Factory," right?
Actually, no. Surprisingly, the U.S. still leads in that area, producing 22% of the world's goods versus China's 13%. (Also surprising, Japan is not that far behind China, with 11%.)
These facts are taken from Karen E. Klein's BusinessWeek article "Finding a U.S. Manufacturer to Make Your Product Idea," where the writer discusses the importance of prototypes, business plans, consulting a manufacturing engineer, understanding whatever product industry you're targeting, et cetera. A must-read for you designers thinking of "going rogue."