Addendum in the Preparation of Bids TO: Potential Bidders of Tender File No_ TENDER N° 004/ONIT/MINMAP/RDNW/DD/ZC/ZCITB/2017 FOR THE CONSTRUCTION OF TWELVE (12) CLASSROOMS AND SIX (06) TOILET BLOCKS IN ZHOA MUNICIPALITY, MENCHUM DIVISION NORTH WEST REGION