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I was thinking of the other item. Yours looks like it does what it says and also not available to a hobbyist. If someone can buy one let us know how. I bet yours could drive at least three of his, so it might make a good multiple ps.
If you want to show and sell these, start a new post on them and talk about how to buy them.
Your web site looks good and I think people would like to see a Chinese web page that has good English so I hope you will make a new post and introduce your company and products, especially if there is a way to buy a few items at a time.