識郎
2018-9-5 12:57:38
https://www.optimumnutrition.com/en-us/authentic
Under the cap of protein tubs is a cardboard vacuum barrier that helps hold powder in place during shipping. This round disk is not for sanitation and is not glued into place. It is common for the cardboard to stick under the cap. The round seal under the caps of bottles containing capsules, tablets and softgels is glued down and typically won’t stick under the cap.