We are strengthening activities to improve the quality of our old

We are strengthening activities to improve the quality of our old products.
While products that have existed for a number of years have stable quality and have been used by customers for a long time, they have quality risks at the time of renewal due to the fact that their drawings are made in outdated ways and do not conform to the latest drawing standards and that they are highly dependent on skilled subcontractors.
To solve this problem, we are implementing activities to re-draw the drawings according to the new standards, uncover true causes, and resolve them as company-wide activities which also involve subcontractors.
Our goal is to reassure our customers at the time of renewal.