Byoherejwe kuri 2016-06-22 Ipitingi ya Zinc Nubwoko bushya bwokwirinda ruswa, yarakoreshejwe henshi, uburyo bwo gutwikira zinc flake ahanini nibikoresho fatizo, gutesha agaciro, gusebanya, gutwikira, gushyushya, gukiza, gukonjesha.1.Gutesha agaciro: ubuso bwakazi bugomba guteshwa agaciro, muri rusange bufite ...
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