Requiring All Contractors Doing Business with DPWH to be Registered with the DPWH Civil Works Registry (CWR) System. Category: Department OrderSub Category: contracts-contractorsSeries: 2010No: 51File: DO_051_S2010.pdfDate: Friday, October 15, 2010Tags: Requiring Contractors Registered Works Registry CRW System 051 Read more about Requiring All Contractors Doing Business with DPWH to be Registered with the DPWH Civil Works Registry (CWR) System.