Sdec
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Usoro SDEC
HongFu Aj-S S S S S S SASTS na injin sdec nke nwere njirimara nke kọmpat, oke mkpọtụ, oriri mmanụ na arụmọrụ na arụmọrụ dị elu. A na-ejikarị ya na mpaghara nkwukọrịta, okporo ụzọ, ọrụ, ụlọ ọrụ mining wdg.