| Customer | Name Works | Scope Of Work | Location | Working Period | Value (THB.) |
| Sinopec Engineering Group (Thailand) Co., Ltd. | Pipes Prefabrication Works of Thai Oil Clean Fuel | Steel Structure | Thai Oil Clean Fuel Project | October 2020 ~ December 2020 | 56,212,640.00 |
| GC Maintenance & Engineering Co., Ltd. | Yellow Oil Removal Unit | Civil, Steel Structure, Mechanical and Piping Work | PTTGC2 (Olefins I-1) | 2020 ~ December 2021 | 12,200,000.00 |
| GC Maintenance & Engineering Co., Ltd. | Utilities Supply to HMC PP#4 | Civil, Steel Structure and Piping Work | PTTGC2 (Olefins I-1) HMC | 2020 ~ October 2020 | 31,179,338.87 |