HPLC&GC Consumables Manufacturer Zhejiang Aijiren Technology, Inc. is a global supplier of Life-science, Chemistry, Laboratory consumables, Etc. Our major products are high performance liquid Chromatography & Gas Chromatography consumables such as Chromatography Autosampler Vials with Closures, Inserts, Crimper and Syringe Filters, Etc; Water Analysis consumables such as COD test tube .