In line with the RMAP Tungsten Smelter Standard, Offically inmplemented by the WBH Management System for Responsible Supply of Tungsten Raw Materials (WBH-RSTM) in Jan. 2019 but practiced before. WBH is a full member of ITSCI and the vast majority of all supplies from CAHRAs is covered by either the ITSCI or Better Sourcing Program (BSP) traceability programmes (“bag & tag”) and associated due diligence, mine site baseline studies and shipment reports.