| Customer | Name Works | Scope Of Work | Location | Working Period | Value (THB.) |
| PTT Maintenance & Engineering Co., Ltd. | Install Roof and Odor Unit for G- 1134-V-1 and G1144-V1 Project | Mechanical, Steel Structure and Piping Construction Work | PTTGC (I-4 Plant) | Januery 2019 ~ 2019 | 9,950,000.00 |
| PTT Maintenance & Engineering Co., Ltd. | Hight Pressure Steam Project (Package 1) | Piping and Steel Structure Construction | PTGC Branch 2 (I-1 Plant) | May 2019 ~ November 2019 | 36,580,000.00 |
| PTT Maintenance & Engineering Co., Ltd. | HDD for Ethylene and Propylene UG Pipeline | HDD Piping and Civil Construction Work | PTTGC6 | March 2019 ~ July 2019 | 39,600,000.00 |
| PTT Maintenance & Engineering Co., Ltd. | Replace Equipment Around C2 Splitter of I-4/1 Project | Piping, Mechanical and Steel Structure Work | PTTGC3 (I-4 Plant) | 2019 ~ Febluery 2020 | 9,850,000.00 |
| PTT Maintenance & Engineering Co., Ltd. | Replace Equipment Around Cold Flare Project | Mechanical, Steel Structure and Piping Construction Work | PTTGC3 (I-4 Plant) | 2019 ~ Febluery 2020 | 8,797,035.00 |
| PTT Global Chemical Public Company Limited | GC4-TA2019-S08A Piping Hot & Piping Cold Work A | Piping and Mechanical Service Work | PTTGC (I-4 Plant) | Januery 2019 ~ June 2019 | 11,100,000.00 |
| PTT Maintenance & Engineering Co., Ltd. | Install Heating Facility in FO Tank Project | Civil and Steel Structure Construction Work | PTTGC6 Refinery Plant, Rayong | June 2019 ~ November 2019 | 36,580,000.00 |
| PTT Global Chemical Public Company Limited | Civil, Mechanical and Piping fabrication and installation O-P3 of the 4th charge gas dryer project | Civil, Mechanical and Piping Construction Work | PTTGC6 (Refinery Plant) | October 2019 ~ December 2019 | 48,000,000.00 |
| PTT Maintenance & Engineering Co., Ltd. | Mechanical, Piping, Civil and Structure, Instrument Work for Treated Water Supply from GUSCO Tie-in for ORP project | Civil, Structure, Mechanical and Piping Construction Work | PTTGC2 (I-1 Plant) | October 2019 ~ Januery 2020 | 43,200,000.00 |
| PTT Global Chemical Public Company Limited | Service OLE2-P03B-Piping Repair Backlog for Turnaround Year 2020 at GC3 | Piping Construction Work | PTTGC3 (Olefins I-4 Plant) | Febluery 2019 ~ July 2020 | 10,500,000.00 |
| PTT Maintenance & Engineering Co., Ltd. | Civil Work Package (CB) | Civil and Steel Structure Construction Work | PTTGC6 Refinery Plant, Rayong | May 2019 ~ April 2020 | 58,900,000.00 |