Vials 8-425 2ml Thread for GC Chromatography China . 1.5ml small opening screw-thread vial with write-on spot, aer 11.6*32mm 20ml headspace vials manufacturer Profile Quzhou Lab Technology Co.,Ltd mainly produces various types of chromatography Sample Vials , Syringe Filters , Petri Dish ,Cuvette,frozen pipes, deep well plates , Centrifugal Tube ,chromatography merane filter, medical pharmacy