The circle is a very simple and complicated figure. In 240 BC, Archimedes of ancient Greece found the formula of the area of the circle, which is a major discovery in the history of the world. The main features of the glass packaging container are: non-toxic, odorless; transparent, beautiful, good barrier, airtight, common raw materials, low price, and can be used repeatedly. And it has the advantages of heat resistance, pressure resistance and washing resistance. It can be sterilized at high temperature or stored at low temperature.