Ref. PDI/BK-BS-036/2019 10th May 2019 Re: Management Discussion and Analysis (MD&A) For the three-month period ended March 31, 2019 To: President The Stock Exchange of Thailand PDI reassessed its

: President, The Stock Exchange of Thailand Ichitan Group Public Company Limited (“ the Company ”), would like to disclose the connected transaction regarding office space rental and providing services

Ref. PDI/BK-BS-056/2018 8th August 2018 Re: Management Discussion and Analysis (MD&A) For the 2Q 2018 and 1H 2018 To: President The Stock Exchange of Thailand Due to depletion of Mae Sod Mine’s

Thailand Due to depletion of Mae Sod Mine’s reserves, PDI stopped its mining activities in 2016 and ceased the conventional zinc business end 2017. Whilst sustaining part of the zinc related activities under

Inter Pharma Public Co. Ltd. 140/9 ITF Tower, 9th Floor, Silom Road, Suriyawongse, Bangrak, Bangkok 10500, Thailand. Tel. 02-634-0225 Fax 02-634-0135 www.interpharma.co.th IP_OCS/009/2019 Date November 4

(Translation) Ref: EIC-AD043/2019 13 November 2019 Subject: Management Discussion and Analysis for the Performance for Nine-Month Period ended 30 September2019 To: President The Stock Exchange of Thailand The

์02-634-0135 www.interpharma.co.th Inter Pharma Public Co. Ltd. 140/9 ITF Tower, 9th Floor, Silom Road, Suriyawong, Bangrak, Bangkok 10500, Thailand. Tel. 02-634-0225 Fax 02-634-0135

policy and goal of MDES is to reinforce the solid practices of personal data protection in Thailand since it is the cornerstone of digital economy development as well as cybersecurity strength. This

วงจตจุกัร เขตจตจุกัร กรุงเทพฯ 10900 Chatuchak, Chatuchak, Bangkok 10900, Thailand Fax : (662) 936-1669 ทะเบียนเลขที 0107554000097 Registration No. 0107554000097 HYDROTEK PUBLIC COMPANY LIMITED บริษทั

/2019 (additional) To Director and Manager The Stock Exchange of Thailand Enclosure 1. Information Memorandum on the Acquisition of Assets (Schedule 1) Regarding the Purchase of the Ordinary Shares of KPN