type a4s-s001 is one of laser printing photo paper product series, synthetic paper made, for a4 laser printer, 153 gsm (weight), 0.22 mm (thickness), with positive polarity. the features are good hand touch feel, without turn-yellowish for long term exposure in air or under halogen lighting, tear-proof, no releasing chemical or medicine smell, wet-proof, to meet environment protection, instant printing and so on. sincerely welcome your inquiry about more detail information of our product.