Cosmetic glass jar widely used in cosmetics, and there are many types of products on the market, but how do we choose them? When choosing a glass bottle, be sure to see if the material is pure.
Of streaks on the surface of a glass. If it's rough, you can feel it when you touch it. If it's fine, you need to look at it to see it.
Refers to the glass in the air because of the formation of a small cavity, in accordance with the reasons for these small holes can be divided into material bubbles and operation bubble.
Refers to the glass body have melted white granular silica sand, which is filled with impurity particles.