4ML Hplc Vials Screw Neck China Manufacturer. 4ml screw-thread vial, aer 15*45mm Company 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 bottle, butyl rubber stopper, various types of thermometers used for