Glo Tool Biotech's COGO TOOL, We always appreciate our customers. As filling up new items like end mills of CBN/for SUS/ for cutting copper in order to meet customer demands, we line up more various 8140 items. It is every product of COGO TOOL that our all our staff pay attention to production and quality control without any careless. Continued from now on, Glo Tool Biotech make our best to supply excellent products low-priced by advanced technology and efficient process improvement.