... test. 3.Food grade borosilicate glass 4.High quality and reasonable price Mirror bottom crystal straight cup :ITEM NO : BLS-260DCAPACITY : ... cup Xiangming visible, give people the visual enjoyment, the refreshed view.3, the cup body is a double-layer structure, ... firing, overall smooth, like nature itself -- highest quality, texture, and anti-scalding heat, to heat insulation function.4, food grade ...