The prefabricated ụlọ bụ environmentally-enyi na enyi na echekwa prefabricated ụlọ, iji ìhè ígwè ọkpụkpụ dị ka etiti, iji kaadị osisi dị ka Herọd ihe onwunwe na-eji ọkọlọtọ modulus usoro na gbasara ohere Nchikota iwu bolt njikọ na a echiche ọhụrụ banyere environmentally-enyi na enyi na echekwa prefabricated ụlọ .
