MD&A Eng Q1-19 13-5-19 _1_ 1 Translation UWC 014-2019 May 14, 2019 Subject : Management Discussion and Analysis for quarter 1-2019 To : President of the Stock Exchange of Thailand Ua Withya Public

1 Translation UWC 022-2018 May 14, 2018 Subject : Management Discussion and Analysis for quarter 1-2018 To : President of the Stock Exchange of Thailand Ua Withya Public Company Limited ("Company

, increasing by 5.99 million baht or 27/35% from trade and other account payables from previous year which was in accordance to the fact that the Company purchased more of raw materials for production and more

manage the raw materials. Please be informed accordingly, Sincerely yours, Mr. Weerachart Lohsiri Managing director

Public Company Limited withdraws money for purchasing raw materials in order to reduce interest from loans.  Non-current financial assets decreased of 86.75 million Baht due to closure of TMBTHANAPLUS

R&B Food Supply Public Company Limited 15 May, 2020 Re Management Discussion and Analysis for the First Quarter ended March 31, 2020 Attn. The President The Stock Exchange of Thailand (SET) R&B Food

statements concerning purchasing raw materials, hiring for spare parts mold production, selling goods, assembling engines, as well as receiving of returned goods and disassembling of engines and spare parts

25.14 percent are finished products, 26.72 percent are work in progress and 32.16 percent are raw materials. The Corporate Group conducts inventory inspection every month and has employed accounting

Ref. DBP. 141 / 2017 November 13, 2017 Subject : Clarification on Operating Results for the 3-Month Period and 9-Month Period ending September 30, 2017 To : President The Stock Exchange of Thailand

2,370 million or 44%. Increase in net loss due to increase in production cost both raw materials and cash conversion cost, Graphite Electrode’s price which is a part of conversion cost increase