Automatic mahjong machine's tablecloth are warped up the reason is off the glue. According to the query related public information shows automatic mahjong machine tablecloth using glue fixed on the desktop, after the glue off the tablecloth will be warped. Glue is an intermediate connecting two materials, mostly appearing as aqueous agents, belonging to the fine chemical class, a wide variety of types, mainly to the sticky material, physical form, hardening method and the material to be adhered to the classification.