Stock loss ซ่ึงไดบ้นัทึกค่าเผื่อมูลค่าสินคา้ลดลง (NRV) ณ 31 ธันวาคม 2562 จ านวน 44.00 ล้านบาท ส าหรับกลีเซอรีนดิบซ่ึงเป็นวตัถุดิบท่ีใช้ในการผลิตกลีเซอรีนบริสุทธ์ิ รวมถึงการพิจารณาตั้งดอ้ยค่าเงินลงทุนใน

operating results for the 3-month period and 6-month period ending June 30, 2017 To : President The Stock Exchange of Thailand Diamond Building Products Public Company Limited and its Subsidiary (together

latter decreased in production due to the adjustment stock management to suitable with the decrease in HRC market price worldwide. - Gain on exchange rate was achieved of THB 193 million in Q2-2017, which

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

ที่ กตพ Ref. DBP. 108 / 2019 August 13, 2019 Subject : Clarification on Operating Results for the 2nd quarter and 6-month Period ending June 30, 2019 To : President The Stock Exchange of Thailand

Ref. DBP. 153 / 2019 November 11, 2019 Subject : Clarification on Operating Results for the 3rd quarter and 9-month Period ending September 30, 2019 To : President The Stock Exchange of Thailand

sales volumes. The sharp decline in the Finished Goods prices has also led to a decline in Raw material prices and the Company suffered devaluation loss on Finished Goods stock, Raw Material in stock and

Shareholders in Proportion to their Respective Shareholdings and Convening of the Extraordinary General Meeting of Shareholders No. 1/2018 To: President The Stock Exchange of Thailand Enclosure: 1. Information

Stock Exchange of Thailand Enclosure: 1. Information Memorandum Re: Acquisition of Assets of T.K.S. Technologies Public Company Limited (Schedule 1) 2. Information Memorandum Re: the Allocation of the

Shareholders in Proportion to their Respective Shareholdings and Convening of the Extraordinary General Meeting of Shareholders No. 1/2018 (Second Amendment) To: President The Stock Exchange of Thailand