1. Raw materials: PC425 cement is mainly composed of composite portland cement, and PO425 cement is mainly made of portland cement clinker.
2. Strength: PC425 cement has high strength, while PO425 cement has relatively low strength.
3. Usage: PC425 cement is mainly used for engineering structures that need to bear large loads because of its high strength. PO425 cement is widely used in construction projects with high durability requirements because of its good durability and wear resistance.