where can I get Vietnamese yellow Marble

I have seen a very attractive warm yellow Marble (http://www.lightemprador.com) last time I was in Thailand (http://maplered.com) . I only managed to understand (http://maplered.com) that it came from Vietnam but got no more info. I need to buy approx 100 cubic metres in block but cannot find the name of this Marble (http://www.lightemprador.com) or who supplies it. Any help / direction very much appreciated.