fixed-price contract(Contract that provides for a price which normally is not subject to any adjustment unless certain provisions (such as contract change, economic pricing, or defective pricing) are included in the agreement. businessdictionary.comAlexander Demidov)
backlog of firm orders(backlog of firm orders can be one of the better indicators of the level of business to be anticipated, but it has to be evaluated carefully Alex_Odeychuk)