High-density polyethylene kav

High-Density Polyethylene Water Supply Pipes HDPE kav dej ua lub luag haujlwm tseem ceeb hauv kev muab dej. Nws zoo heev corrosion kuj, hnav tsis kam thiab lub neej ua haujlwm ntev ua rau nws yog qhov kev xaiv zoo tshaj plaws rau…