Tinokwanisa kugadzira mhando dzakasiyana dzemanhole epurasitiki nhanho, tine nhanho dzakazara dzematanho, akadai seSimbi, Carbon simbi, simbi isina tsvina, aluminium uye plastiki yakavharidzirwa.
Isu tinokwanisa zvakare kugadzira zvigadziriso zvitsva nedhirowa yemutengi kana sampuli.
Ruzivo rwakawanda runowanikwa kana watambira kubvunza kwako.
1) DIN19555/EN13101
2) BS1247