How to check the child resistant cap is perfect?

How to check the child resistant cap is perfect?

  1. how to use it open it easy?

    Push down and revolve it up,it will be easy to open.

  2. How to check it quanlity?

    Choose 50-100 children who are aged 3-5 years old,ask them open the glass jar with child resistant cap,of course you can not remaind them in advance.So that you will get a better answer about the child resistant cap whether good nor bad.IMG_1600