Chengetedzo munzvimbo inotonhorera, ine mhepo yekuchengetera mhepo.Ramba kure nemoto nekupisa.Iyo package yakavharwa.Inofanirwa kuchengetwa zvakasiyana kubva kune oxidants, zvinoderedza maajenti, acids, alkalis, uye makemikari anodyika, uye kudzivirira zvakasanganiswa kuchengetedza.Yakashongedzerwa nemhando yakakodzera uye huwandu hwemidziyo yemoto.Nzvimbo yekuchengetera inofanirwa kunge yakashongedzerwa nezvinhu zvakakodzera kuti ive nekudonha.
