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qhov twg yuav zoo PPR fittings
Daim ntawv thov ntawm PPR kav dej thiab fittings nyob rau hauv lub tsev cov khoom siv dej
Nrog rau kev txhim kho hauv nroog cov tsev thiab cov khoom siv dej hauv tsev, PPR kav dej thiab fittings tau dav siv vim lawv lub cev ruaj khov thiab tshuaj lom neeg. PPR cov ntaub ntawv muaj cua sov zoo heev…