... mineral exploration industry and geological survey. Forsun manufactures diamond core bits which are commonly used in mineral exploration ... and water well drilling. We have impregnated diamond type, surface set type, electroplated diamond type, T.C. type, PCD type ... Flat" profile, "Semi-round" profile, "Cross" profile...Surface Set Diamond Core Bit:Bit Crown Profiles: "Semi-round" profile, "Step" ...