B.Grimm
Katrat Upayokin currently serves as the First Senior Vice President at B.Grimm since November 2022. Additionally, Katrat holds the position of Managing Director at PANRAIL Thailand, a role maintained since September 2014. Prior experience includes serving as Senior Vice President and Division Country Lead for IC RL/MOL at Siemens from June 2010 to May 2014.
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