Special notebook for cleanroom Size:A3,A4,A5,other size can be booked 20, 30, 50 sheets per piece Basic ... and manufacturing environments. Benefits:Supports good laboratory practices for documentationDurable for data and note retention:minimal contamination from particles ... -bound and spiral package. 20,30, 50 sheets per notebook for choose.Specification:Basic weight:80gsm,Caliper:5.0milTensile strength ...