Beepan - I have replied to your PM. Lets share some more information via PM and I will try to help. Unfortunately, I will be seriously confined for two weeks from this coming Tuesday, and may only sporadically be able to access the net.
But to share information here on beemaster - I have never bought or sold hives/swarms, and don`t know anyone who has. Best to pick up a wild swarm of Apis cerana. From there I can share information on the differences you will want to know in comparison to the mellifera that you already know. And, you might get lucky and attract a mellifera swarm too.
To all of the rest of you - I haven`t been back to Beemaster for years, but I have had bees every year since way back there and have 2Ms, and 5Cs at this time - far reduced from past years. Some areas of Japan simply do not have honeybees anymore. So sad.