Dear K.Supat,
Do we have guarantee customer for special thickness’s requirement? NO
Our material is in tolerance EN standard but tolerance of thinkness of plate ( width 8’) is trend to be much minus ++
Cusomter bough C400 first time , it has no problem about thickness
Our sales already informed eveything about standard and let them inform what they are serious of their job
For this case , they ask us to correct it (milling thickness down) and willing to pay milling expense to us