1. Mhando dzakasiyana-siyana dzinogona kutevedzerwa pasina, nemuvara wakajeka, unoshandiswa sevheni kune zvakasiyana-siyana zvemapuranga-based panels uye huni, nehupamhi hwekuoma, kupfeka kusagadzikana uye kunaka kwekudzivirira kupisa.2. Kupokana kwemakemikari kwakajairwa, uye kunogona kuramba kubvongodzwa kweakajairika acids, alkalis, oiri, doro ...
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