witsend, thanks for your link. Actually we are now investigating it. In Amazon and eBay there are lot of our discontinued products for sale, such like MS300, MS509, MS310 etc. Some have large qty of stock. Most of them are cloned.Actually these products have been discontinued for several years, so there is no better way to distinguish it is genuine or clone. We can only judge from the appearance of technology.
Anyway, we have team to investigate it now. Thanks for all your understanding in advance.