Quota variations in an industrial fixed price system

An abstract model of an industrial process provides conditions which make it possible to increase the net outputs and lead to a significant simplification of the proof and an extension of numerous results which follow from Braverman's model with non-equilibrated prices. The actual possibility to increase the deliveries cannot be detected by quota variations no matter how small. Conditions are provided under which this situation is eliminated in varying the quotas on system element outputs.