Ihe na-egbochi ire ọkụ, igwe anaghị agba nchara mgbochi corrosion na uzuzu.
Nwere bọtịnụ PC, mgbanaka mkpuchi silicone, siri ike na ntụkwasị obi.
Enwere ike iji ngwaahịa a na njikwa ohere, ụgbọ njem, ngwa nchekwa, ngwa ụlọ, ngwa ahụike, ụlọ ịsa ahụ, wdg.