Dear Khun Kenneth 
Sorry for late reply, we ve got long holidays in Thailand on 12-15 April, 2015. 
BOI privileges will be based upon imported machineries and parts relating to the project. 
If your general HS codes indicate as above, we confirm these equipments are under BOI. 
Anyway, will you please give me those code numbers sothat I may forward to SEAPAC import&Export department 
Best Regards, 
Rachanida