Our company Welch Materials Inc. With 20 years experience; Develops and manufactures laboratory accessories like pipette tips, Centrifuge Tube, scales, gloves, syringe filters, membranes and Chromatography consumables including HPLC columns, Solid Phase Extraction (SPE) columns, Flash chromatography columns and other. All of our products are 100% compatible to following brands via thousands of Moulds: Agilent, Avantor, Axygen, Beckman, Eppendorf, Finnpipette, Genrui, Hamilton, Integra, Thermo Fisher, BIOHIT, BRANDTECH, DRAGON. Cost is just 30%-50% of above brands.