Why do so many Lean implementations fail to deliver stable flow?Because they ignore the core secret behind Just-in-Time: Heijunka.In this concise, practical guide, Dr. Mohamed H. Soliman explains how production leveling — or Heijunka — helps organizations:Build predictable and stable production schedulesReduce overburden, bottlenecks, and downtimeAlign suppliers and internal processes for smoother flowCut inventory without risking stockoutsUnlock the full potential of Just-in-Time (JIT) systemsWhether you're managing a factory floor or improving service operations, Heijunka is the missing link between demand and discipline — and this book gives you a clear roadmap to apply it.Achieve flow. Reduce chaos. Level up your operations — the Toyota way.