... top cap and screwing cap sealing: special sealing colors printing Aluminum tube for packaging 1-layer2-layer3-layer5-layer Layer: √ ... tubes, classified into the transparent tube, white tube, pearlized tube, pearlized white tube and various colored tube.3.Shape: round ,oval, flat ... , super-oval flat.4.Printing: 8-colors offset printing, 6-color silkscreen printing , foil ...