Management Discussion and Analysis for the Year 2018 Business Overview Business overview of One to One Contacts Public Company Limited and its subsidiaries (“the Group”) for the year 2018 compared to

Management Discussion and Analysis for the Year 2019 Business Overview Business overview of One to One Contacts Public Company Limited and its subsidiaries (“the Group”) for the year 2019 compared to

Ref. DBP. 025 / 2018 February 21, 2018 Subject : Clarification on operating results of Year 2017 To : President The Stock Exchange of Thailand Diamond Building Products Public Company Limited and its

Management Discussion and Analysis for the First Quarter of Year 2019 Business Overview Business overview of One to One Contacts Public Company Limited and its subsidiaries (“the Group”) for the

Products Public Company Limited and its Subsidiary (together referred to as “Corporate Group”) would like to clarify on the operating results according to the consolidated financial statements for the 1st

Company Limited and its Subsidiary (together referred to as “Corporate Group”) would like to clarify on the operating results according to the consolidated financial statements for the 1st quarter ending

Diamond Building Products Public Company Limited and its Subsidiary (together referred to as “Corporate Group”) would like to clarify on the operating results according to the consolidated financial

Thailand Diamond Building Products Public Company Limited and its Subsidiary (together referred to as “Corporate Group”) would like to clarify on the operating results according to the consolidated financial

Page 1 of 2 Management Discussion and Analysis for the First Quarter of Year 2020 Business Overview Business overview of One to One Contacts Public Company Limited and its subsidiaries (“the Group

........); ( 5.3 A major catastrophe that has had, or continues to have, a significant effect on the entity’s financial position (paragraph........); ( 5.4 Correction of previous year’s material misstatement in