I-tungsten powder kunye ne-ammonium metatungstate (APT) amaxabiso e-China agcina uzinzo xa ifandesi ye-ammonium paratungstate stocks evela kwi-Fanya yokutshintshiselana ngentsimbi ebhangayo ihlala ingacacanga.

Amaqhina kuqoqosho lwamazwe ngamazwe kunye norhwebo nawo akwisiphithiphithi, ngoko ke yonke imarike ibanjwe kukulinda-ubone umoya kunye norhwebo olulinganiselweyo.Imarike ye-molybdenum concentrate inamaxabiso kodwa akukho ntengiso, ixhaswa ngeendleko eziphezulu kunye nokunyuka kwengqondo yabathengisi.Ukongeza, iitshekhi zokusingqongileyo zaseTshayina zenza unikezelo lwempahla ekrwada luqinile.Iifektri ezinyibilikayo zihlala ziphantsi izinga lokusebenza kwimarike ye-APT echatshazelwa yimfuno ebuthathaka kunye nobungozi bokuguqulwa kwexabiso.