Engineering changes in EPC mode how to affect contract price I am very interest in organization & contract part(about DBB PPP DB FIDIC EPC and so on), my bachelor major is engineering of cost，there is a lot of relevant knowledge could help me. Professor, I'm sorry that I submitted the paper topic without discussing with you, because today is the deadline to submit the paper title, if it is overdue, I will have to pay a penalty. Best wishes.