Kumtunda kwa unyolo wamakampani a nitrocellulose ndi thonje woyengedwa, asidi wa nitric ndi mowa, ndipo minda yayikulu yogwiritsira ntchito kunsi kwa mitsinje ndi ma propellants, utoto wa nitro, inki, zinthu zama celluloid, zomatira, mafuta achikopa, kupukuta msomali ndi zina. ...
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