网页Aijiren supply GC Vial with Closures for GC Analysis Online 20ml Headspace Vial Exporter. 10-20mL 18mm Screw Thread Headspace ND18–Aijiren 20mL Amber Precision Screw Headspace Vial, Round Bottom, 22.5*75.5mm, 5.0 type 2. 18mm Screw Thread Headspace Caps With Septa Part No. SACA001 SACA002-II SACA