Start: 2011 - Finish: 2011
Owner : PTT Maintenance and Engineering Co., Ltd.
START: 2018 - FINISH: 2019
Owner : PTT Maintenance and Engineering Co., Ltd.
START: 2014 - FINISH: 2014
Owner : Eastern Pipeline Service Co., Ltd.
START: 2008 - FINISH: 2009
Owner : PTT Maintenance and Engineering Co., Ltd.