I am writing with reference to conversation with Khun Angkana Thamsukulwong as Front Office Supervisor on date 24/06/2016 which concerned the customer of ITC Group that there are 2 groups on date (Tata Benhur Group of Guide Dao and Polycab-Sotc Group of Guide Nadia) Period 27-28/04/2016 However , with our further investigation, we have to find out this case that follow up as below;