Description:4 inch*4 inch Cloth weight:140g per square meter Seal edge:knife-cut Packing:vacuumize. Grade: standard class 100 -10000 workshop Features: 100% continuous polyester, unbent double weaving, soft surface, low dust generate, and the friction is without dropping fiber , good water absorption and cleaning efficiency, Scope of application : electronics industry, clean room, optical advices, optical fiber manufacture, printing, smt, precision equipment, food, pharmaceutical, mechanical processing, automobile , beauty , maintaining etc, The cleanroom wipe cloth with knife-cut, after washing by ultra-pure water in clean room, then finish its packaging. Size g/m2 pcs/bag bag/ctn kg/ctn 4*4 120 600 10 8.67 According to customer demand produce any of products¡£