Provincial Waterworks Authority Attention: Directors and Managers The Stock Exchange of Thailand CC: Secretary-General of the Office of the Securities and Exchange Commission, Thailand Attachment: Map of the

ที่ -1- Baan Rock Garden Public Company Limited 601 Ramkhamheang 39 Pracha-Uthit Rd., Wangthonglang, Bangkok 10310, Thailand Tel. 02-934-7000 Fax. 02-934-7186 www.rockgarden.co.th BROCK : 019 /2018

ที่ -1- Baan Rock Garden Public Company Limited 601 Ramkhamheang 39 Pracha-Uthit Rd., Wangthonglang, Bangkok 10310, Thailand Tel. 02-934-7000 Fax. 02-934-7186 www.rockgarden.co.th No. BROCK : 003

ที่ -1- Baan Rock Garden Public Company Limited 601 Ramkhamheang 39 Pracha-Uthit Rd., Wangthonglang, Bangkok 10310, Thailand Tel. 02-934-7000 Fax. 02-934-7186 www.rockgarden.co.th BROCK : 047 /2019

ที่ -1- Baan Rock Garden Public Company Limited 601 Ramkhamheang 39 Pracha-Uthit Rd., Wangthonglang, Bangkok 10310, Thailand Tel. 02-934-7000 Fax. 02-934-7186 www.rockgarden.co.th No. BROCK : 007

ที่ -1- Baan Rock Garden Public Company Limited 601 Ramkhamheang 39 Pracha-Uthit Rd., Wangthonglang, Bangkok 10310, Thailand Tel. 02-934-7000 Fax. 02-934-7186 www.rockgarden.co.th BROCK : 030 /2017

-1- Baan Rock Garden Public Company Limited 601 Ramkhamheang 39 Pracha-Uthit Rd., Wangthonglang, Bangkok 10310, Thailand Tel. 02-934-7000 Fax. 02-934-7186 www.rockgarden.co.th BROCK : 039 /2017

ที่ -1- Baan Rock Garden Public Company Limited 601 Ramkhamheang 39 Pracha-Uthit Rd., Wangthonglang, Bangkok 10310, Thailand Tel. 02-934-7000 Fax. 02-934-7186 www.rockgarden.co.th No. BROCK : 003

ที่ -1- Baan Rock Garden Public Company Limited 601 Ramkhamheang 39 Pracha-Uthit Rd., Wangthonglang, Bangkok 10310, Thailand Tel. 02-934-7000 Fax. 02-934-7186 www.rockgarden.co.th BROCK : 016 /2019

ที่ -1- Baan Rock Garden Public Company Limited 601 Ramkhamheang 39 Pracha-Uthit Rd., Wangthonglang, Bangkok 10310, Thailand Tel. 02-934-7000 Fax. 02-934-7186 www.rockgarden.co.th BROCK : 031 /2019