Vertical Chromatography, Thailand whose popular brands are Vertisep HPLC Columns and Vertibond GC Columns .

Labhut,UK whose popular brand is Cronusil .

SMT,USA whose popular brand is SMT .

Benson Polymeric,USA whose popular columns are USP L17,L19 ,L34 HPLC Columns .

Frontier Laboratories, Japan whose popular columns are Ultra Alloy Cappillary Columns .

ES Industries, USA.

Chromtech, UK whose popular unique columns are Chiral AGP Columns.

Shinwa Chemical Industries, Japan whose popular unique columns are Ultron ES OVM –L57 Columns.

Jordi, USA whose columns are Jordi GPC Columns.

Sumichiral OA Columns, Japan and Welchmat Columns, USA .