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Ọsọ ọsọ nke akụrụngwa a dị ugbu a ugboro 40 kwa nkeji, nke bụ ọkwa kacha elu na China.Ọ nwere sistemu akpaaka dị ka nlebanya nri, nlebanya nri akwụkwọ, nleba anya na-emepụta, na nlekota nchịkọta.Ọ bụrụ na enwere mmejọ, igwe ga-akwụsị wee kwuo.
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Dabere na igbe a ga-emepụta
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Agbanwere ụdị ọkụ eletrik ka ndị ọrụ chọrọ
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Mmalite nrụpụta ozugbo O/D kwadoro
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Dabere na igbe akwụkwọ a họpụtara
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Nkwakọ ngwaahịa mgbochi mmiri
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