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nature : Paper Industry in a cardboard plate intermittent pressure-ray equipment. There are two steel-pressure roller, the next roll on roll driven rotation. Tablet thick cardboard or glue on cardboard table, each and every roll-through pressure, George-quality dense, uniform thickness and with good luster. Pressure can also repeat several light. In a watermark or the color of cardboard calendar. A single light-pressure, friction other.
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