Global Chromatography (Su Zhou) Co, Ltd., a wholly-owned subsidiary of Unimicro Technologies, Inc., USA, specializes in manufacturing of columns and packing materials. Our main products include traditional HPLC columns, Prep-HPLC columns, capillary CEC columns, cHPLC columns and micro-HPLC columns with column inner diameter ranged from 0.05 mm to 100 mm. All of them are packed with our own Globalsil packing materials by our outstanding techniques of packing under carefully controlled manufacturing conditions. Each column is individually inspected for QC and QA and a test chromatogram is attached to the column. We have columns packed with Globalsil-AP, BP, BIO series, and other series such as Globalsil-C1, C4, C8, NH2, CN, Si, pH, and etc.