dscn4617

a new product of oil board,which can be written with matched stick constantly. 1,The oil board is colorless and nonpoisonous,,which fundamental ingredients is lubricant.2,Which can be written constnatly with matched stick by lifting the superficial oil paper and put it back.3,Oil reservoir may pile up after reusing many times. Something soft such as the face tissue can be used to wipe it even. 4, ...