NM njikọ
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Njikọ NM na NBR Rubber Spider, Ụdị 50, 67, 82, 97, 112, 128, 148, 168
Njikọ NM nwere ebe abụọ na mgbanaka na-agbanwe agbanwe nke nwere ike ịkwụghachi ụdị ọdịiche dị iche iche nke ogwe osisi. Ejiri roba Nitile (NBR) mee mgbaaka ndị a nke nwere nnukwu njirimara ime mmiri nke na-enye ohere ịmịkọrọ ma na-eguzogide mmanụ, unyi, mmanụ, mmiri mmiri, ozone na ọtụtụ ihe mgbaze kemịkalụ.