Autosampler Vial, Headspace Vial, and Sample Storage Vial are produced in Aijiren, Zhejiang, China. They are made of high-quality borosilicate hydrochloric acid glass. There are various specifications, screw neck, crimp neck, snap neck, including transparent glass, amber glass, with graduations, and writing labels. With customized logo. Cap is made of PP, Aluminum, Metal and other materials. Septa is made of Silicone and PTFE. Septa is also made of Butyl. It can be pre-slit or sealed.