members of The Stock Exchange of Thailand and those interested to be informed accordingly would be appreciated. Yours faithfully, -Signature- (Mr. Pongsak Thiengviboonvong) Managing director

material cost for production, was higher than the same period of the previous year. For the nine-month period of 2017, the Company's profitability decreased from the same period of the previous year as well

of 19% in sales volumes. The USD zinc price significantly increased by 36% to 2,598USD/ton in Q2 2017 from 1,915USD/ton in Q2 2016. However the Thai Baht against the US dollar appreciated with 3% from

risks and substantial returns, in South East Asia and beyond, targeting area’s in Energy, Eco and Materials. Other M&A targets, when encouraging, will be considered as well. Please be informed accordingly

to last year. For your consideration to the members of The Stock Exchange of Thailand and those interested to be informed accordingly would be appreciated. Yours faithfully - Signature - (Mr. Pongsak

2019 decreased comparing to last year. For your consideration to the members of The Stock Exchange of Thailand and those interested to be informed accordingly would be appreciated. Yours faithfully

informed accordingly would be appreciated. Yours faithfulkly, -Signature- (Mr. Pongsak Thiengviboonvong) Managing director

period of the previous year as well. ROA decreased from 4.88% to 2.48% and ROE decreased from 6.29% to 3.17% and EPS decreased from 3.20 Baht/share to 1.55 Baht/share. The efficiency of using the total

-months periods of year 2019 decreased comparing to last year. For your consideration to the members of The Stock Exchange of Thailand and those interested to be informed accordingly would be appreciated

Thailand, targeting area’s in Energy, Eco and Materials. M&A targets in any other area, when encouraging, will be considered as well. Please be informed accordingly. Yours truly, -- Signature -- (Ms