Mr. Liu - You may not be familiar with Audiogon, but this is the wrong spot to advertise your product. It looks like an interesting product at a reasonable cost, but you should place this announcement as either a classified ad or an auction. Placing comments here in the discussion forums is not good etiquette here. You should also place information on the Head-Fi website if you have not already. I'm not sure where the appropriate spot on that site to advertise might be as I don't post there, but perhaps someone else might suggest a link.
Good luck!
Good luck!