Tsis ntev los no, tus neeg siv khoom xaj qee qhov HDPE yeeb nkab fittings. Hnub no, peb tau qhia peb cov khoom HDPE pob khoom rau cov neeg siv khoom no. Peb cov neeg siv khoom txaus siab heev thiab tos ntsoov yuav tau txais peb cov khoom.
Yog tias koj tseem muaj kev xav tau ntsig txog, thov sau rau peb.we zoo siab ua haujlwm rau koj.
