... transparent glass tubing 1)borosilicate glass 3.3 2)10 years experiences 3)Lead free,heat resistant 4)14 colors Normal cutting borosilicate transparent glass ... tubingCompany Introduction:Huailai Tianyuan Special Type Glass Co.,Ltd.whish ... ,Pink,Purple, Opaque black,Transparent black,Opaque white. Borosilicate glass drinking straws A:Available colors ...