Jiji Press TOKYO (Jiji Press) — Mitsubishi Materials Corp. said Thursday it has found additional cases of product data falsification involving three of its subsidiaries, two of which were newly found to have engaged in the irregularities.
The three firms are Tokyo-based Mitsubishi Aluminum Co., its aluminum-processing unit, Tachibana Metal Co., based in Osaka, and auto parts maker Diamet Corp., based in Niigata.
Nearly 500 client companies were supplied with products that were affected by the newly found manipulation of product quality data.
Now that five Mitsubishi Materials units have been found to be engaged in data falsification, Mitsubishi Materials President Akira Takeuchi told a press conference, “We offer a deep apology for the inconvenience to parties concerned.”
According to Thursday’s announcement, a Mitsubishi Aluminum factory in Susono, Shizuoka Prefecture, and a Tachibana Metal plant in Yoro, Gifu Prefecture, manipulated quality data on extruded aluminum products.
In addition, they carried out product inspections that did not meet the requirements of the Japanese Industrial Standards.
Affected clients totaled 115 firms for Mitsubishi Aluminum and 307 companies for Tachibana Metal. No safety problems have been raised.