Pharmaceutical/medical glass test tube are made of borosilicate glass tube. A wide variety of glass test tubes covering 6*50mm, 8*50mm, 10*75mm, 12*75mm, 13*100, 15*100, 15*125mm, 15*150mm, 16*100mm, 16*125mm, 16*150mm, 18*150mm, 20*150mm, 25*150mm standard medical test tube. Production is...