The research topic is "Models for evaluating the effectiveness of the organization of production of small and medium-sized enterprises in the industrial sector." I would be very grateful for any help, for example, in choosing the optimal model, using the methodology for forming integrated performance indicators (safety, ecology, quality), etc. Does anyone know what "efficiency" is, not from an economic point of view? I would be interested in how lean manufacturing methods (tools) are implemented and applied in a real industrial enterprise, in particular: rapid changeover (SMEO), universal equipment maintenance (TPM). Thank you in advance.