1.Preamble: Na chọrọ maka fechaa na nchekwa nke ụgbọ ala ahụ, ihe integrally kpụrụ ụzọ knocker mụrụ.The integrally kpụrụ ụzọ knocker mejupụtara AB ogidi, ọnụ ụzọ, n'elu okpokolo agba, wdg, nke na-integrally na-ekpo ọkụ stampụ mgbe laser ịkwa akwa ịgbado ọkụ;Ike adịla na...
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