Aijiren vialclosure chromatography vial,reagent bottle 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