Procurement and Use of Cement for DPWH Infrastructure Projects and other Related Matters. Category: Department OrderSub Category: construction-materialsSeries: 1990No: 163File: DO_163_S1990.pdfDate: Tuesday, July 31, 1990Tags: Procurement Use Cement Infrastructure Projects materials 163 Read more about Procurement and Use of Cement for DPWH Infrastructure Projects and other Related Matters.