At first, I would like to amend grade from 6582 to 4340 but K. Ruja informed that the Cr is too high to do that. So, I have to maintain grade and linkage to 4340 by 34CrNiMo6. The MTC will be referred in the file of 4340, I think we can use original MTC, except dia 190. Anyway, I will reconfirm with K. Supat again.