1,20mm flip off cap is made of plastic and aluminum;the plastic will be torn off and 
    the aluminum will remain on the bottle in use.
2,The plastic part material is PP;its color can be customized.
3,The aluminum part is H16,8011;its color is usually silver,other color can also be customized.
4,Our workshop is class C purification workshop and has passed GMP certification.
5,All our vial caps are tested by automatic detection equipment;Its quality is reliable.
6,The size of 13mm flip off cap is 20.3*7.3mm;Other sizes can also be customized.
7,The packing is PE bag and 5 layer carton,10000 pcs/bag/carton.