Why are there bubbles in the glass bottle body?
In the early stage of glass production , the melting furnace stage , the raw material is fused by gravity and convection , and when the few raw materials do not fuse , the problem of the bottle body will appear bubbule phenomennon , but in FET we have mature process , in high quality production line there will be no bubbles in the glass jars .
In addition , FET Glass jars have strict quality control , worthy of your trust !