ชี้แจงผลการดำเนินงานของบริษัทและบริษัทย่อยประจำปี 2549 UKEM012/2020 May 15, 2020 Subject : Management Discussion and Analysis of Business Operation results for Quarter 1/2020 To : Director and

Mr. Pranay Kothari Mr. Pranay Kothari, an Executive Director and representative of juristic person of Polyplex Corporation Limited (“PCL”), PCL which holds more than 5 percent shares in Polyplex

(Thailand) Public Company Limited (“PTL”), and Mr. Pranay Kothari, an Executive Director and representative of juristic person of PCL, know the information on PTL’s performance in the consolidated and

Mr. Maruphong Siriwat Between 12 February and 3 March 2016, Mr. Maruphong Siriwat, a general manager of thermoplastic project of International Engineering Public Company Limited (IEC) at Rayong

Bann Tongkum Co., Ltd. Bann Tongkum Co., Ltd. rendered assistance and support for Mr. Bhusana Premanode, while being director and executive of International Engineering Public Company Limited (IEC

Mr. Somchai Phothi Mr. Somchai Phothi rendered assistance and support for Mr. Bhusana Premanode, while being director and executive of International Engineering Public Company Limited (IEC) and Mr

being director and executive of International Engineering Public Company Limited (IEC) and Mr. Maruphong Siriwat, a general manager of thermoplastic project of IEC at Rayong province performed their

director and executive of International Engineering Public Company Limited (IEC) and Mr. Maruphong Siriwat, a general manager of thermoplastic project of IEC at Rayong province performed their duties

Miss Rewadee Ardharn Miss Rewadee Ardharn, while being Senior Accounting Manager of TRC CONSTRUCTION PUBLIC COMPANY LIMITED (TRC), knew or possessed negative substantial inside information about

Miss Ounruen Sujarittham Miss Ounruen Sujarittham, while Senior Finance and investor Relations Manager of TRC CONSTRUCTION PUBLIC COMPANY LIMITED (TRC), knew or possessed negative substantial inside