Flask is one of our borosilicate glass ware include flat ... long neck and short neck. and all the type. Flask is one of our borosilicate glass ware include flat bottom ... and short neck. and all the type of the Flask used in the LAB. Our company produces and exports ... the production of borosilicate glass (Pyrex).Our products include Beaker, Flask, Desiccator, Test tube, many type glass tube, Bottle, Funnel ...