First, autoclaving （Shorthand:AC）
1,External mark: The stripes on the 3M chemical indicator tape are uniformly changed to → black.‘
2, inside the logo: 3M chemical indicator card on the bright white stripes.Evenly changed to → black.
3,Validity: 15 days in winter and 7 days in summer. 4, 3M chemical indicator tape and 3M chemical indicator card
Second, ethylene oxide sterilization （Shorthand:EO）
1,External logo: The color card on the paper-plastic bag is changed from brown or pink to → orange.
2, the internal logo: 3M chemical indicator card on the bright white stripes evenly changed to → military green.
3, paper and plastic bags without damage, no moisture.
4,Validity period: one year.