Headspace VialsRLab Vials Manufacturer 20MM Crimp Top Headspace Vials in 6ml,0ml,20ml. Aijiren is the largest chromatography consumable manufacturer in south of China. There are HPLC vial, GC vial, Septum and closures, EPA vial, TOC vial, Test tube, Reagent bottle and Syringe filter in Aij