2ml Clear/Amber vials HPLC /GC Screw Thread/Crimp-Top/PP Vials 2ml 4ml sample vials. Country/Region: Taiwan, China. Main Products: Transducer Protector,Syringe Filter, HPLC sample vials ,Membrane Filter,glass microfiber filter. Total Revenue: US$10 Million - US$50 Million. Top 3 Markets: