1, Otu oge fixing.Twister mbọ nwere ike idozi plastic ngwaahịa na twister mbọ n'otu oge, na-ezere ọnwụ kpatara ogbenye fixing, ugboro ugboro Anam Udeme pụta na nailing na.
2, Anyị na-eji carbon ígwè ihe na-eme ka, elu na-galvanized, corrosion eguzogide, nwere ike ịgbatị ojiji nke oge.
3, Na a dịtụ elu na-eri arụmọrụ, na twister mbọ ugbu a na-ere na ahịa bụ ụdị ntu kpọmkwem iji dozie asbestos taịl nile, ahịa bụ nke ọma stocked, Ya mere, twister mbọ bụ ihe magburu onwe oke maka fix plastic na asbestos ngwaahịa. .
A na-enyocha ngwaahịa niile nke ụlọ ọrụ ahụ na-emepụta nke ọma site na ngalaba nlekọta dị mma ma dị mma.Nnwale ahụ kwadoro ngwaahịa tozuru oke, na-ere n'ụwa niile iji nwetakwuo ndị ọrụ otuto.
