Kufuna kwamakampani akumunsi kwayambanso kubwereranso posachedwa.Mitengo ya zinthu zopangira meta-phenylenediamine, cobalt chloride, ndi cobalt sulfate yakwera.
Opanga utoto ambiri asintha mitengo yawo.Pamene kufunikira kwa m-phenylenediamine kukuchulukirachulukira, mitengo ya utoto wobalalitsa ndi resorcinol ikwera.
Nthawi yotumiza: Aug-11-2020