Mitengo ya tungsten ku China idakhalabe yofooka mu sabata yomwe idatha Lachisanu Novembara 8, 2019 chifukwa chakutsika kwamitengo yolosera za tungsten ndi zotsatsa zatsopano.Ogulitsa ali ndi chidwi chokhazikika pakukhazikika kwamitengo yamakono yamsika, koma msika unali wofooka ndipo mbali yomaliza inali yopanikizika.

Chifukwa cha kuchepa kwa phindu la mafakitale osungunula, malonda a msika anali ovuta kuwonjezeka.Pachiwopsezo cha kutsika kwamitengo ndi kuchuluka kwa zinthu, mafakitale adachedwetsa ntchito yopanga ndi mlengalenga wolemetsa ndikuwona.Ogwiritsa ntchito otsika alibe zofunika kuti azidya zopangira, ndipo ogula amafunikira mitengo yotsika mtengo.Kusiyana kwamitengo yamaganizidwe pakati pa ogula ndi ogulitsa kwakula, ndipo mapangano azinthu zapamalo adakhala ovuta kwambiri.Mitengo yonse yamsika inali yotsika.