They are a rebrand of a Taiwanese airbrush company:
http://coloreddrawing.com.tw/product-view.php?pid=45
I haven't ever used the Taiwan ones - but they pop up every now and again.
I would probably recommend them before I would recommend a China-built brush for various reasons if you are on a really tight budget, but honestly without actually handling them myself...I would have a hard time recommending them.