... CM-FS719 are constructed from compressed ,100 ppi(Z) open-cell polyurethane foam that is free from organic contaminants such ... -No contaminating adhesives or coatings.Advantage:1.The 100ppi open-cell sponge or polyester head have excellent absorbency and ... static sensitive components parts-Used in the electronics, semiconductor, hard disk drive, LCD,PCB,SMT, IC, medical and biotech industry .Packing ...