May 17, 2021
Regarding the Revocation of the JIS Certification for Aluminum Sheet Products
at the Company Nagoya Plant
Nippon Light Metal Company, Ltd.

Our company underwent an extraordinary certification maintenance review (April 22 –23, 2021) by the JIS certification organization Japan Quality Assurance Organization(“JQA”) regarding JIS-marked products at the Nagoya Plant. At that time, JQA revoked
the JIS certification of the Nagoya Plant effective May 14, 2021, on the basis that themineral and industrial products and their processing technology do not meet thestandards provided in the Ministry Order on Certification of Conformity with JapaneseIndustrial Standards and that the contents were grave, and we have received a notice tothat effect.
The “JIS Certification Violation Investigation Committee” (Chair: Toshihide Murakami,
Director and Head of Central Product Safety & Quality Assurance Division, Nippon
Light Metal Holdings) established today at our parent company, Nippon Light MetalHoldings Company, Ltd., will conduct a thorough clarification of the entire situation andinvestigation of the causes, and formulate countermeasures to prevent recurrence of themisconduct that caused the revocation of the JIS certification. The misconduct that hasbeen discovered at present is as follows.
(1) From around 1996, when testing specimens were collected for tensile testing ofaluminum sheet products at the Nippon Light Metal Nagoya Plant, tensile
testing of collected specimens of sheet products of non-heat-treated alloy with athickness of 6.5 mm or higher (“Thick Sheets”) was carried out using a method(perpendicular to the rolling direction) that differed from the JIS regulations(parallel to the rolling direction), notwithstanding which the Thick Sheets werecontinuously shipped with the JIS mark affixed.
(2) When test specimens of Thick Sheets were collected for the renewal review byJQA (February 2020), the situation described in (1) was falsified and test
specimens were collected in accordance with JIS regulations.
We deeply and sincerely apologize for causing grave trouble and concern to all of ourcustomers and many related parties that have supported our products, and for thebetrayal of the trust in our company that this has caused.
Going forward, we will be unable to manufacture or sell aluminum sheet products with
the JIS mark at the Nagoya Plant. As an emergency corrective measure, we havecompleted a revision of the testing method that conforms to the JIS regulations, and wehave determined that it is possible for us to provide products that are functionallyequivalent to JIS standards. We will promptly contact our customers and many relatedparties to provide explanations, and will handle the situation with utmost sincerity.
Going forward, we aim to conduct a fundamental review of our quality control systems,
make every effort to restore trust, and re-acquire JIS certification as soon as possible.
We again deeply apologize for the grave trouble and concern caused to our customers,related parties, and many other stakeholders.
Contents of Order・Revocation of certification under JIS marking system
・Certified party: Nippon Light Metal Company, Ltd. Nagoya Plant, 1-11-1, Koike,
Inazawa-shi, Aichi-ken
・Certification number: JQ0308004
・JIS number and title subject to revocation of JIS certification:
JIS H4000 Aluminum and Aluminum Alloy Sheets, Strips, and Plates

End

Contact Relating to Release:
Public Relations Office
Nippon Light Metal Company, Ltd.
TEL: +81-3-6810-7160