To survive against foreign products, it was necessary to reduce costs and shift towards a system capable of handling a wide variety of products in small quantities.

The field resists change, but over the course of about a year, worker education (awareness reform) was conducted, and the reform was implemented. The number of improvements per person ranged from 5 to 15 items per month.

During the four-year project, more than 40,000 improvements were made, achieving targets in productivity, defect rate, on-time delivery rate, and lead time for each item.