I've not heard of this supplier, but I would suggest looking at some already established sources here on Meso. Here's why. If you should have any issues (quality, confiscation, delivery T/A) you can always bring it to the board and it will be taken care of properly. Guys like Darius, Frank, 24K are known to handle these kinds of issues appropriately. If you buy from an unknown source then you are pretty much on your own should there be problems. In some ways, buying from an unknown defeats one purpose of this board. If you do use the source keep your order small. Just a thought for you.
Oh and my comments on sources posted above is NOT a recommendation, just an observation. I've only used one and that was beginning of this year.