PPR yeeb nkab vs galvanized hlau
PPR yeeb nkab VS Hlau Yeeb Nkab:5 Cov Tub Ntxhais Zoo
Nyob rau hauv lub ntiaj teb nthwv dej ntawm lub tsev xa dej thiab dej ntws kho dua tshiab, PPR (random copolymer polypropylene) cov yeeb nkab thiab fittings yog hloov cov kav hlau ib txwm muaj nrog qhov nruab nrab txhua xyoo kev lag luam loj hlob ntawm 17.3%....