Jul 07, 2021 · There’s a aijiren Tech vial & closure for every HPLC, GC, MS instrument, application, and budget. Screw Vials, Caps, Septa, Inserts & Kits. aijiren Tech gc 2ml screw cap vial manufacturer aijiren Tech crimp top vials for HPLC and GC are available in 8mm, 11mm, or 13mm crimp border diameter in clear and amber glass and plastic.