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Mwambo impregnated antimoni graphite mphete vacuu ...
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Mphete kapena graphite seal mphete shaft chisindikizo cha mec ...
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Mphete yoyera ya graphite yokhala ndi conductivit yabwino ...
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Kuphatikiza graphite mphete dzimbiri kukana ndi ...
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Kusindikiza mphete ya graphite graphite composite gasket gr...
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Antimony impregnated makina chisindikizo graphite R ...