30 Mutarama, ibiciro bya tungsten

Beijing Huasheng Metal Materials Co., Ltd. yashinzwe mu 2003. Isosiyete imaze igihe kinini ikora imirimo y’ibyuma bidafite fer (tungsten, molybdenum, tantalum, niobium, nikel, cobalt, ferro alloys hamwe n’umutwaro w’itanura). Umusaruro wingenzi nogutunganya: ibicuruzwa bya tungsten na molybdenum, ibicuruzwa bya tantalum na niobium, ifu ya tungsten, ifu ya karubide ya tungsten, ifu ya molybdenum, ifu ya niobium, ifu ya tantalum nibindi bicuruzwa bidasanzwe byifu, nikel, cobalt, rhenium nibindi bicuruzwa bidafite fer fer.