opc ppc цемент зарна
Барилгын материал » Элс, хайрга, цемент. Get Quote. OPC vs PPC. Difference Between OPC and PPC Cement. The long-form of OPC is Ordinary Portland Cement and the long-form of PPC is Portland Pozzolana Cement. Generally, the ISI mark on the ordinary Portland cement bag is black in colour whereas the ISI mark on the ...