... knives’ length. Suitable fields:Wooden industry: the process of the wave board, cabinet door, wooden door, artistic door, no-painting door, ... of the play machine, mahjong table, computer board and furnishing.Advertising industry: Advertising board, the design of the signs, the ... , Nonmetal materials such as man-made marble, sand, plastic board, PVC tube, wood boardOther fields: Can engrave many big ...