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06.What are the materials of the glass

Dec 14, 2019

The glass is mainly made of silicon dioxide, ordinary glass is calc-silicon glass, better is high borosilicate, so-called hard glass.

The glass of common wide mouth type is calcium-silicon glass, want to remind here, the lead content that we worry about commonly is here, because calcium-silicon glass is cheap, production cost is low, the lead content in cannot get effective control, everybody attention.

Higher quality glasses are high borosilicate, which contains almost no lead and is much more expensive because of the complexity of the process.