TOKYO -- Mitsubishi Materials said its subsidiaries falsified data about products, including parts for cars and aircraft, for at least a year, the latest in a series of quality assurance scandals involving Japanese manufacturers.
The company said an investigation in the wake of a data-falsification scandal involving joint venture partner Kobe Steel found that Mitsubishi Cable Industries had inappropriately distorted data for rubber sealing products, used in cars and aircraft.
The data was manipulated to match specifications set by the company or its clients and took place in the two-and-a-half years since April 2015, the unit said on Thursday.
Another subsidiary, Mitsubishi Shindoh, had manipulated data for metal products, Mitsubishi Materials said. It said it found problems at Mitsubishi Shindoh going back to October 2016.
Nissan, Subaru, Kobe Steel
Kobe Steel, Japan's No. 3 steelmaker, admitted in October that workers tampered with product specifications, shaking up global supply chains and forcing global automakers, aircraft manufacturers and other companies to check whether the safety or performance of their products had been compromised.
Mitsubishi Materials has a 45 percent share in a copper tube joint venture with Kobe Steel, including the Hatano plant that is at the center of Kobe's data-falsification scandal.
Mitsubishi Materials said it has not found any safety or legal problems in both its subsidiaries. The company said it did not know whether there would be any effect on its financial outlook.
The company said it has set up a task force to look into the problems and to devise counter measures to improve quality control.