Description Donghang Tech 2ml Screw Neck Vials 9-425 thread (Clear&Amber) Autosampler Vials are known as HPLC Vials and GC Vials. The design adopts European and American advanced screw-top bottles, and design features are easy to use, especially the use of an automatic injection system. vials are preferentially used on kinds of manufacturers: Aijiren, Aijiren Technology, Gilson, VWR, Shimadzu, AB Sciex