Invitation To Bid For The Provision of Blue/Security Guards Thru Security Guard Agency Details Published on Tuesday, 26 January 2016 00:01 Hits: 4044 Invitation To Bid For The Provision of Blue Guards/Security Guards Thru Security Guard Agency To Be Assigned in DENR 4A Office Building and LMS Records Building In Calamba City And Los Baños, Laguna, Respectively.