· Igodo PC gbakwunyere efere kọntaktị, arụmọrụ dị elu.
· A na-eji ihe na-egbochi ọkụ na-eme ka nchekwa.
· igwe anaghị agba nchara shei anticorrosive na uzuzu uzuzu.
· Na silicone waterproof ring, siri ike na a pụrụ ịdabere na ya.
Enwere ike iji ngwaahịa ndị ahụ na, ngwa nchekwa, ngwa ụlọ, ngwa ahụike, ngwa ụlọ ọrụ mmepụta ihe, mmalite, ụlọ ịsa ahụ, ngwaahịa eletrọnịkị, njikwa ohere, wdg.