Vim li cas PPR puab hlau tig? Kev sib hloov ntawm cov hlau sab hauv ntawm PPR yog hais txog qhov xwm txheej uas cov hlau nyob hauv cov yeeb nkab ntawm PPR tig. Sab nraud ntawm cov khoom siv PPR feem ntau yog ua los ntawm cov khoom siv PPR, tab sis sab hauv yog stainless hlau lossis tooj liab. Nws yog ua ke nrog tooj liab lossis stainless hlau tom qab tshav kub fusion ntawm PPR. Lub loosening ntawm cov hlau sab hauv tshwm sim vim tias kev sib xyaw ntawm ob cov ntaub ntawv cuam tshuam rau qee yam.
