clean room copy A4 paper HIGH degree of cleanness softly and white brightly. weight : 75g , 80gSpecificationscleanroom copy A4 paper HIGH degree of cleaness softly and white brightly. weight : 75g , 80gcleanroom copy a4 papersize: A4 A5 A6PACKING: 50PCS /BOOK. 50 BOOKS / BOXCOLOR: CUSTOMISEDWEIGHT: 72G 80Gcharacteristic: our cleanroom paper are mainly designed for writing and printingfibers and particles are tightly bound in a clean paper by polymerization process,andalso can reduce the static electricity. cleanroom copy paper A4HIGH degree of cleanessgood water absorbability