20mm Green KeiFei Vial Stopper

20mm Green KeiFei Vial Stopper

1.This rubber stopper is designed for KeiFei glass vials with 20mm neck ring finish.

2.The main raw material, bromobutyl rubber.

3.The production is finished in GMP standard workshop under strict quality control, and in conformity with National Standard.

we offer different model:

KeiFei vials 10ml with black printing on the bottom of vial

KeiFei vials 20ml with white printing on the bottom of vial

KeiFei customize green rubber stopper

KeiFei flip off cap in variety color