Cleanroom Wipes Material : 100% Polyester Knit Wipes,Double Knits Size: 4"*4", 6"*6", 9"*9", 12"*12" Classs: 100, 1000, 1000 Cleanroom wipes Description ... heat sealed edge (HSE), ultrasonic sealed edge (UCE) . Material : 100% Polyester Knit Wipes,Double Knits Size: 4"*4", 6"*6", 9"*9 ...