... mineral exploration industry and geological survey. Forsun manufactures diamond core bits which are commonly used in mineral exploration, site ... NMLC, HMLC, LTK48, LTK60,EWK, AWK.Note:Impregnated Diamond Core Bit:Impregnation Depth: 6-12mm; 6mm is "Forsun" standard ... " profile, "Semi-round" profile, "Cross" profile...Surface Set Diamond Core Bit:Bit Crown Profiles: "Semi-round" profile, "Step" profile ...