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Big Cleaning Day 5S: Activities in August 5th 2011 on Big cleaning day President Prasert Bunsumpun with top management of PTT group in the opening ceremony

ปตท เชิญชวนร่วมงาน PTT Group Innovation for Future Society วันที่ 14-15 พ ย 66 ณ ปตท สำนักงานใหญ่

pttor Big Cleaning Day 5S: Activities in August 5th 2011 on Big cleaning day President Prasert Bunsumpun with top management of PTT group in the opening ceremony

ptt or PTT Public Company Limited or simply PTT is a Thai state-owned SET-listed oil and gas company Formerly known as the Petroleum Authority of Thailand,