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Jb quartz alimentary canal product features: quartz alimentary canal: the quartz alimentary canal is used in chemical research and others. jb cement instrument accessories product features: cement instrument accessories: this product is used in special quartz glass apparatus for cement development. the product is with complete specifications, standard sizes and cheap. the full products use quartz , resist high temperature. the quality is assured. 250ml-1000ml quartz oxygen molotov cocktail product features: quartz oxygen molotov cocktail: quartz glass is made by high-temperature melting, with the raw materials containing silicon dioxide such as crystal and silica, and silicon tetroxide. the silicon dioxide content in quartz oxygen molotov cocktail is much higher than the ordinary glass. generally speaking, silicon dioxide content in quartz glass is 99.999%. 10ml-2000ml quartz flask with shank product features: quartz flask with shank: quartz glass is made by high-temperature melting, with the raw materials containing silicon dioxide such as crystal and silica, and silicon tetroxide. its silicon dioxide content is much higher than the ordinary glass. generally speaking, silicon dioxide content in quartz glass is 99.999%. laboratory containers quartz ceramic quartz containers