Reference from pr.no.1-33206 Date:Mar. 21 2014 ,record resolutions of the Board of Directors approved, procurement/purchasing/
employment record no.TRIF-PTN/PC/2557/15 Subject: Approved procurement Cleaning Services for the year 2014, quote.no.Q1_M-001_15/2556 Date:15-Dec-2013, The cleaning service price comparison for Pantip Plaza shopping center(Pratunam Branch) Doc.no.5612-00412,date:Dec.17, 2013 from central procurement, The budget document TRIF., Term of Reference