Many people believe that stone powder in sand is harmful to concrete, so they try their best to remove it.
Little do they know, a moderate amount of stone powder can also have a positive effect.
.
Construction Precast Development
Precast News From China
Many people believe that stone powder in sand is harmful to concrete, so they try their best to remove it.
Little do they know, a moderate amount of stone powder can also have a positive effect.
.