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The raw material of medical glass bottles is mainly quartz sand. Medical glass bottles are made through processes such as raw material pretreatment, batch preparation, melting, forming, and heat treatment. Among them, heat treatment includes over-annealing, quenching, and other processes. Heat treatment is to eliminate or produce internal stress, phase separation or crystallization of medical glass bottles, and to change the structural state of medical glass bottles. https://yuankangglass.com