1.usage:surgical cotton roll 2.certification:ISO9001-2008,ISO13485 3.Advantage:located in cotton ... Detail:30daysSpecificationsHigh Absorbency, meet with BP, free from neps, leaf shell and seeds, and can offer the high absorbency, no irritationAbsorbent ... pressure by pure oxygen, to be free from neps, leaf shell and seeds, and can offer the high absorbency, no irritation ...