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Narongsak Jivakanun is currently the Chief Executive Officer, Secretary & Director at PTT Global Chemical Plc.
He is also the Chairman at Emery Oleochemicals LLC, Bio Spectrum Co. Ltd., and Global Green Chemicals Public Co. Ltd.
Additionally, he holds director positions at PTTGC Innovation America Corp., NatureWorks LLC, PTT ICT Solutions Co., Ltd., Thai Choline Chloride Co., Ltd., Emery Oleochemicals Hk Ltd., Sermkit Textile Co. Ltd., PTTGC International (Netherlands).
BV, PTTGC America Corp., PTTGC America LLC, and GC International Corp.
In his former roles, Mr. Jivakanun served as the Chief Executive Officer at PTTGC International Pte Ltd.
and PTT Chemical International Ltd.
(Asia Pacific ROH).
He was also the Vice Chairman at Vinythai Public Co., Ltd.
and Chairman at PTT MCC Biochem Co., Ltd.
and GC Estate Co., Ltd.
Furthermore, he held director positions at PTTGC Innovation America Corp., Linde Group (United Kingdom), Linde (Thailand) Public Co. Ltd., Global Green Chemicals Public Co. Ltd., Linde HyCO Ltd., PTT Phenol Co., Ltd., Emery Oleochemicals (M) Sdn Bhd, Solution Creation Co., Ltd., PTTGC International (Netherlands) BV, Vencorex Holding SAS, Emery Specialty Chemicals Sdn Bhd, PTT Digital Solutions Co. Ltd., GC Polyols Co., Ltd., and PTT Chemical Public Co., Ltd.Mr. Jivakanun completed his graduate degree at Oregon State University and his undergraduate degree at the University of Chulalongkorn.

Narongsak Chaviengpob is currently working as the Vice President-Engineering at Thai Oil Public Co. Ltd.

Narongsak Kunchornsap worked as a Director of Human Resources at Project Planning Service PCL.
He holds a Master's degree in Business Administration from Ramkhamhaeng University and an undergraduate degree from Rajamangala University of Technology Thanyaburi.

Narongsak Sonpuak worked as a Secretary at Health Empire Corp.
Public Co. Ltd.
in 2016 and as a Research Analyst at Far East Securities Co. Ltd.