Ordinary plastic bottles are made of PET. ?The bottle cap is pressed in hard, either manually or by machine. The outer film is heat-shrinkable plastic, which can be removed manually using a hot air blower or machine.
For the glass bottles, there are some that have a twist seal, some that are pressed in directly, and finally, they are put on with a heat shrink tube, then heated and sealed.
Tinplate packaging is pressed hard, either by hand or by machine.
For peanut oil, you can search Shunxing Youfang on Baidu to learn more.