Niaj hnub no, ib pawg ntawm cov khoom yuav los ntawm Tanzanian cov neeg siv khoom tau thauj khoom thiab xa tawm. Muaj PPR yeeb nkab thiab haum, pph yeeb nkab thiab fittings, HDPE fittings thiab lub kaum sab xis valve. Ua tsaug rau koj txoj kev txhawb nqa.
