Conquest of the fault of wooden dieborad to which a size is changed by environmental(humidity) change has been a big subject from ancient times. At Katayama Steel Rule Die, this problem has been tackled for years and "Laser Dieborad +" which gave special coating to the plywood surface and suppressed change of the internal amount of moisture was developed. It is a dieboard which is excellent in dimensional stability. We recommend you to use in combination with the metal counter plate of our company.