As glass is silica, about 54 per cent-65 by mass, which is a quantity that is less than the glass breaking, and lead oxide, lime substance with sodium ingredients. In General, there will be a lead oxide are more than 24 percent. This type of glass when the light comes out there will notice that affects the sparkle sparkling beauty. Can be carved into various patterns used to make appliances, jewelry? It must take the lead and potassium oxide in high quantities. There is little quantity production and requires skill in grinding.
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