After discussion with K.Suthichai, K.Nusara, P'Pun and also K.Apichart, we can't supply VCM to TPC due to
there will have decoking at the end of Feb until early Mar, VCM consumption per day is low and limit for produce PVC.
I'm still not inform K.Srisiri na ka. I'm awaiting your comment before further action kha'.