PVC drainage pipes
Tshiab daim ntawv thov ntawm PVC yeeb nkab nyob rau hauv kav dej system
Tsev neeg dej mov thiab dej ntws system yog “lifeline” ntawm vaj tse, tab sis tsoos hlau yeeb nkab yog yooj yim xeb, qhob yeeb nkab yog bulky thiab nyuaj rau nruab, thiab PVC yeeb nkab nrog lub teeb, corrosion...