Cov Sodium Naphthalene Sulfonate Formaldehyde (SNF / PNS)
Jan 16, 2020
Sodium Naphthalene Sulphonate Formaldehyde tsim kom muaj cov pob zeb ua haujlwm nrog cov yam ntxwv ua haujlwm tau raug xa mus rau kev ua haujlwm siab. PNS tseem tso cai rau cov qhob tsim nrog cov dej tsawg heev / cement ntau nyob ntawm qhov qis lossis ib txwm ua haujlwm. Sodium Naphthalene superplasticizer