PVC slotted yeeb nkab
DAB TSI YOG SLOTTED PVC YEEB NKAB SIV RAU?
PVC SLOTTED YEEB NKAB TAU DHAU LOS UA IB TUG NROV THIAB IB PUAG NCIG TUS PHOOJ YWG YEEB NKAB NYOB RAU HAUV NIAJ HNUB ENGINEERING VIM NWS ZOO CORROSION KUJ, LUB TEEB YUAG THIAB YOOJ YIM INSTALLATION THIAB NPAUM DRAINAGE KEV UA TAU ZOO. Txawm hais tias nyob rau hauv nroog ...