Cleanroom Wiper Material : 100% Polyester Knit Wipes,Double Knits Size: 4"*4", 6"*6", 9"*9", 12"*12" Classs: 100, 1000, 1000 Cleanroom wiper Description: the ... "Classs: 100, 1000, 10000 Application: Cleanroom wipers are widely used in PCB, LCD, Semi-conductor ,Chemical, instrument, Laboratory, Food indusries etc., Cleanroom Wiper