Production leveling
（重定向自Production smoothing）
Production leveling, also known as production smoothing or – by its Japanese original term – heijunka(平準化), is a technique for reducing the Mura (Unevenness) which in turn reduces muda (waste). It was vital to the development of production efficiency in the Toyota Production System and lean manufacturing. The goal is to produce intermediate goods at a constant rate so that further processing may also be carried out at a constant and predictable rate.