Well, sorry, but all the sites are either in Russian or Chinese, neither of which I read.
Are you certain it doesn't just take a standard USB cable?? I would be a little shocked to find that they made some proprietary cable just for USB transfer (although iPod did just that ... so I guess it's possible).
Could you maybe post some photos of your Kolin showing the ports?? I might be able to tell if it was standard USB or not.