July 5, 2021
Revocation of JIS Certification of Subsidiary (Nikkei Niigata Company, Ltd.)
Nippon Light Metal Holdings Company, Ltd.
Nippon Light Metal Holdings Company, Ltd. announced today that Nikkei Niigata Company,Ltd., a subsidiary, received notice from the Japan Quality Assurance Organization (JQA)
concerning revocation of its JIS certification effective July 2, 2021 with regard to JIS-marked
products manufactured by Nikkei Niigata, on the grounds that the standards specified in theMinisterial Ordinance on Certification of Conformity to Japanese Industrial Standards relating tomineral and industrial products and their processing technologies are not satisfied and theparticulars of the non-conformities are substantial.
The Nippon Light Metal Group sincerely apologizes for the significant inconvenience and concern
caused to customers and other stakeholders by this disposition handed down by the JQA for
inadequate quality control systems, which follows the dispositions concerning the Nippon Light
Metal Nagoya Plant and Nikkei Extrusions Company, Ltd.
We reported the improper conduct that led to the revocation of JIS certification to the Special
Investigation Committee established on June 9, 2021, which includes three attorneys and twooutside directors of the company.
We take the disposition imposed by the JQA very seriously and will conduct an extensive review
of Group quality control systems and make every effort to regain trust.
Details
1. Background to the Revocation
On May 19, 2021, Nikkei Niigata was instructed by the Special Investigation Committee ofNippon Light Metal Holdings, its parent company, to conduct comprehensive inspections ofproducts displaying JIS marks and commenced said inspections. During the process of conducting
the inspections, Nikkei Niigata discovered on May 28, 2021 that JIS marks were displayed on theidentification tags affixed to products not eligible to display JIS marks at the time of shipmentfrom May 2007 to April 2021 and reported this to the JQA.
In addition, on June 5, 2021, Nikkei Niigata discovered that, since obtaining JIS certification in2007, although it had been conducting tensile tests on extruded bar products by preparing test
specimens that differed in shape from the specimen shapes required by JIS standards, it had been
continuously shipping products with JIS marks. The company further discovered that, during acertification renewal inspection, test specimens were prepared in accordance with JIS standards forassessment only at the time of renewal inspection. These facts were subsequently reported to theJQA on June 8, 2021.
Furthermore, during a provisional certification maintenance inspection on June 17 and 18, 2021 by
the JQA, it was found that there were errors in the test specimen preparation method for the tensile
tests (in cases where the wall thickness at the sampling site exceeds 20 mm) required under JIS
standards and that the number of test specimens collected for sampling in retesting wasinsufficient.
Nikkei Niigata’s JIS certification was revoked, effective July 2, 2021, on the grounds that theparticulars of this improper conduct were found to be substantial.
2. Details of the Disposition
Details of disposition: Revocation of JIS certification
Reasons for disposition: Based on the results of a provisional certification maintenanceinspection conducted on June 17 and 18, 2021, products with JIS marks-1-

Certification holder:Certification number:Standard names:

affixed were continuously shipped even though some products weresubjected to tensile tests by preparing test specimens that differed inshape from the specimen shapes required by JIS standards, thestandards specified in the Ministerial Ordinance on Certification ofConformity to Japanese Industrial Standards relating to mineral andindustrial products and their processing technologies are not satisfied,
and the particulars of the non-conformities were found to be
substantial.
Nikkei Niigata Co., Ltd.
JQ0307002
JIS H 4040 Aluminium and aluminium alloy bars and wires
JIS H 4080 Aluminium and aluminium alloy extruded tubes and colddrawn tubes
JIS H 4100 Aluminium and aluminium alloy extruded profiles

Nikkei Niigata received notice that the JQA decided to maintain certification number JQ0307003 (JISH 8602 Combined coatings of anodic oxide and organic coatings on aluminium and aluminium alloys).

3. Status of Responses
As of 4:00 p.m. on June 2, 2021, all products subject to the JIS certification revocation have been
shipped as products conforming to internal standards, and this measure will remain in place.
We will contact and explain the situation to our customers and other stakeholders and will makeevery effort to respond in good faith.
4. Future Outlook
We are currently investigating the future impact of the temporary suspension on consolidated
financial results and will make an announcement if revision of forecasts is needed.
Contact information for inquiries relating to this announcement
Public Relations and Investor Relations
Central Planning Office
Nippon Light Metal Holdings Company, Ltd.
Tel: +81-3-6810-7160-2-

Reference Information
Organizational Diagram of the Nippon Light Metals Group (As of July 1, 2021)
Nippon Light Metal Holdings Company, Ltd.

Nippon Light Metal
Company, Ltd.

Toyo Aluminium K.K.

Nippon FruehaufCompany, Ltd.

Nikkeikin Kakoh Kaihatsu Holdings
Company, Ltd.
Nikkeikin Aluminium CoreTechnology Company, Ltd.
Riken Light Metal Industry
Company Ltd.,
Nikkei Extrusions
Company, Ltd.
Nikkei Niigata Co., Ltd.
Nikkei Kamara Co., Ltd.
Nikkei Technology CenterCo., Ltd.

Overview of Nikkei Niigata• Trade name:• Address:• Representative:• Business activities:•••

Nikkei Niigata Company, Ltd.
1572-19 Tarodai, Kita-ku, Niigata City, Niigata Prefecture
Hiromitsu Koike, President and Representative Director(1) Manufacture of large extruded aluminum shapes and aluminum
fabricated products (for trucks, rolling stock, automotive parts,construction, electrical machinery, industrial equipment, etc.)(2) Manufacture of aluminum containers (beer kegs, Japanese sakecontainers, thick-walled pressure vessels, etc.) and beer servers(3) Manufacture of special rolled products and aluminum powder
composite products
Date of establishment: April 4, 2002
Capital:10 million yen
Net sales:19.7 billion yen (FY 2020)

Details of JIS Certification
Certification holder: Nikkei Niigata Company, Ltd.
Certification number: JQ0307002 (revoked)
Standard names:
JIS H 4040 Aluminium and aluminium alloy bars and wires
JIS H 4080 Aluminium and aluminium alloy extruded tubes and colddrawn tubesJIS H 4100 Aluminium and aluminium alloy extruded profiles
Certification number: JQ0307003 (certification maintained)
Standard names:
JIS H 8602 Combined coatings of anodic oxide and organic coatingson aluminium and aluminium alloys-3-