This step Including the storage, weighing, mixing, and conveying of raw materials. The ingredients of raw materials in the glassware manufacturing process are approximately 70% quartz sand along with a specific mixture of soda ash, sodium carbonate, limestone, dolomite, feldspar, borax, barium, and cullet. It is required that the ingredients are mixed evenly and the chemical composition is stable.

The most important raw material is silica sand also called quartz sand since it controls the strength of the glass. The amount of silica can be chosen based on the type of glass to be made, nomally we manufacturer tree type of glass: Type I – Borosilicate Glass; Type II – Treated Soda Lime Glass; Type III – Soda Lime Glass. The silica sand content is also important as the melting point of the glass is inversely proportional to it.