TOKYO — Shares of Japanese firm Mitsubishi are dropping after the company admitted to fudging product data. <br /> <br />Mitsubishi Materials admitted on Thursday that two of its subsidiaries had falsified product data to match specifications set by clients, according to the Japan Times. <br /> <br />Mitsubishi Cable Industries altered data on its O-ring sealing products, affecting 270 million units sold over a two and a half year period to firms that include aircraft and car makers. <br /> <br />Specs on metal products for car and electronic components were also misrepresented by Mitsubishi Shindoh, with least 29 companies believed to have bought the parts between October 2016 and 2017. <br /> <br />So far, none of the products have been caused safety problems. Reports claim one other unit had supplied products with falsified information, though these have already been confirmed safe to use. <br /> <br />The Mitsubishi scandal is the latest blow to Japan's once-prestigious manufacturing industry, which has been rocked by multiple controversies this year from companies like Kobe Steel, Nissan, Subaru, Toshiba, and Takata.