I suspect that they could take your idea, your design, mfg it for you, and be selling THEIR version faster and wider than yours.
S'funny, something very much like that happened to a company I know of.
Its ironic how the most aggressively entrepreneurial people in world right now are in a PHRASECENSOREDPOSTERSHOULDKNOWBETTER. country.
Asia seems to be the wild west of intellectual property. I'm all for a laissez-faire market, but they take things to an extreme.
For an interesting take on patents, try this article:
http://www.tinaja.com/glib/casagpat.pdfMore articles here:
http://www.tinaja.com/patnt01.aspAs usual, take it with a grain of salt. Don Lancaster has been in the "small scale tech startup" phase of business for about the last thirty years.