Well, with such a profitable miner that is capable of switching algos and making a large amount of money per day, they have no reason to sell it overseas with added electrical cost when they can sell the miner to those in China. It's sad but true, they might even be mining with it themselves.
if you conect from international to baikalminer you can see a QQ ID,if you conect from china You will see a different QQ address.
If you speak English with that QQ account, or your QQ is not Chinese they will not respond.
If you do not believe you can try with proxy sock5 server in china!!!