No. CAZ 002/2019 26 February 2019 Subject: Management Discussion and Analysis Year ended 31 December 2018 Attention: The President The Stock Exchange of Thailand CAZ (Thailand) Public Company Limited

Management Discussion and Analysis for Interim Business Operations Financial Performance for the year ended December 31 , 2018 (Unit : M ill ion Baht) 2018 2017 Inc./(Dec.) % Construction income

cash received from long- term borrowings from a financial institution amount of THB 161 million and dividend payment amount of THB 417 million. Financial Ratio Analysis Financial Rate 12 months In 2018

-1 -Translation- Ref. LPN/SorKor/146/2562 9th May 2019 Re: Financial Statements Analysis Report Q1/2019 Dear: President The Stock Exchange of Thailand L.P.N. Development Public Co.,Ltd. would like to

to operating profit from the period. Analysis of performance Gross Profit Margin was affected by two major factors: 1) A change in foreign currency exchange rates Table 1: Foreign currency exchange

No. CAZ 007/2019 15 May 2019 Subject: Management Discussion and Analysis 1st Quarter ended 31 March 2019 Attention: The President The Stock Exchange of Thailand CAZ (Thailand) Public Company Limited

30 July 2019 At: ACC/HO 017/19 Re: Management Discussion and Analysis for the Quarter of 2/2019 To: President The Stock Exchange of Thailand In the second quarter of 2019, the Thai economy inclined

-1 - Translation - Ref. LPN/SorKor/217/2562 7th August 2019 Re: Consolidated Financial Statements Analysis Q2/2019 Dear: President The Stock Exchange of Thailand L.P.N. Development Public Co., Ltd

from High-Valued Document. 2Q19 Revenue Breakdown Mil THB TBSPTKS 311 325 277 267 Q2 18 Q2 19 592 + 0.8% 588 T.K.S. Technologies Public Company Limited Management Discussion and Analysis Operating

1 IDH-AC-000-อส6208/22.00 9 August 2019 Re: Management Discussion and Analysis Operating results for the three-month and six-month period ended 30 June 2019 To: President The Stock Exchange of