Report copyright - 64.0 cm 21.0 cm 21.0 cm 20.8 cm - PTT Global Chemical Public …investor.pttgcgroup.com/misc/AR/20120306-PTTGC-AR2011-TH.pdf · 2012. 3. 6. · สันปกปรับขนาดตามความเหมาะสม
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