Theko ea tungsten powder, ammonium metatungstate(APT) le litheko tsa ferro tungsten naheng ea China li ile tsa tsoela pele ho nyoloha bekeng e felileng ka Labohlano la la 27 Loetse 2019 qetellong ea fantisi ea setoko sa Fanya le litheko tsa tataiso tse tiileng ho tsoa ho likhamphani tse thathamisitsoeng tsa tungsten.

Ba tšehelitsoe ke ho tiisa ho fumaneha ha thepa e tala le litšenyehelo tse phahameng tsa tlhahiso, baetsi ba thepa e tala ba ne ba le leqe ho rekisa lihlahisoa tsa bona le ho phahamisa litheko.Lifeme tse ntseng li eketseha tsa ho qhibilihisa li ile tsa emisa tlhahiso kapa ho fokotsa tlhahiso ha matsatsi a phomolo a ntse a atamela.Ka lebaka leo, phepelo ea APT e ile ea e-ba thata haholoanyane 'me litheko tse ling li ile tsa phunyeletsa boemo ba $ 239.70 / mtu, empa litšebelisano tsa sebele li ne li sa phethoe ka seoelo.Bakeng sa 'maraka oa phofo ea tungsten, theko e nyolohetse ho $30.3/kg.Likhamphani tsa alloy tsa Downstream li ne li le thata ho hlophisa tlhahiso le ho fana ka litefiso.Ba ne ba lula ba le hlokolosi haholo.