Dear Mr. Pitak
At this moment, SCC has limited number of employees and key men in Thai oil refinery. Also, LABIX project has delayed due to the problem that is beyond SCC's control and poor management system of the main contractor. Therefore, SCC is wasting resources such as supervisors and engineers to push the project forward. This is the main reason that SCC's staff are working very hard.
From the causes I mentioned above, SCC would have to decline the modification work of four off burn. B-4011.
We appreciate your kind understanding