???? ??????? ??????? ???? ????? operation ???????? ??? ????? short. Specifies ??? ????????? obligations ??? side ???? concerns upkeep machinery, and details schedules ???????. Aids ??? ????????? ?? ???? disputes ??? sides and clarifying responsibilities ?? side Helps ?? guaranteeing quality ???????? ????? ????? ???? ????? ?????? ?????? ????

????? ???? ? ????? ?? ????? ???????, ?? ??????? ?? ?????? ????? ??????? ????????. ???? ??????? ???? ??? ??? ?????? ????? ? ???? ???? ????. ??? ??????? ??? ????? ???????: ????????, ????????, ??????? ???????. ?? ??????? ?? ????? ??? ??????? ??????? ???? ??? ????? ??????? ? ?????? ??? ?????. ??????? ????? ????? ??????? ?????? ?? ??? ????? ?