WINSOUND (THAILAND) COMPANY LIMITED During the month of June 2014, Mr. Amorn Meemano (“Mr. Amorn”) at the time holding the positions of Chief Executive Officer and Managing Director of Crown Tech
who submitted the changes in securities holding report (Form 59-2) - ORI : ORIGIN PROPERTY PUBLIC COMPANY LIMITED Management Name : Air Chief Marshal BUREERAT RATANAVANICH | Type of securities : Common
Management Name : Air Chief Marshal BUREERAT RATANAVANICH | Type of securities : Common share | Methods of Acquisition / Disposition : Sell | Transaction Date : 06/10/2016 http://capital.sec.or.th/webapp
/result59c.php?cmb_comp_run_code=0000018874 List of management who submitted the changes in securities holding report (Form 59-2) - ORI : ORIGIN PROPERTY PUBLIC COMPANY LIMITED Management Name : Air Chief Marshal
despite a sharp increase in LME zinc price. The USD zinc price increased by 23% from 2,781USD/ton in Q1 2017 to 3,422USD/ton in Q1 2018. Thai Baht appreciated against the US dollar by 10% from 35.29 THB/USD
44.19 million or 99.93%, which was in line with the sharp increase in revenues from sales in this period. Gross profit margin in Q2/2018 was 62.21%, a slight decrease by 0.61% year-on-year. The decline in
businesses were offset by sharp decline in Specialty Chemicals margins. Annual production was 11 million tons (+20% YoY), mainly driven by contribution from our acquisitions in 2018 and consolidation of
the operation of the company because PLC has transferred its entire business to PMC. The company hereby reports to the SET accordingly. Sincerely yours, Boondee Amnuayskul (Mr.Boondee Amnuayskul) Chief