JIS Certification Revoked for Aso Concrete Industry
Overview
The General Building Research Corporation of Japan reported that it reviewed the quality control system of Aso Concrete Industry Co., Ltd. and revoked its JIS Mark certification effective November 9, 2026. An on-site investigation confirmed that, over an extended period, the company manufactured and shipped products using cement or mixtures different from those in its mix design plans, and concealed this by falsifying records. The nonconformities were serious, and the company was found not to meet the ministerial ordinance’s quality control requirements. The certification covered JIS A 5308, “Ready-Mixed Concrete.”
Key points
- The General Building Research Corporation of Japan revoked Aso Concrete Industry Co., Ltd.’s JIS Mark certification.
- The investigation confirmed manufacturing and shipments that differed from the plans, as well as falsification of records.
- The revoked certification covered JIS A 5308, “Ready-Mixed Concrete.”
Overview
The report was made under Article 22, paragraph 4 of the Ministerial Ordinance on Certification of Conformity with Japanese Industrial Standards for Industrial Products and Processing Technologies, pursuant to the Industrial Standardization Act. The ordinance is Ordinance No. 6 of 2005 of the Ministry of Health, Labour and Welfare, the Ministry of Agriculture, Forestry and Fisheries, the Ministry of Economy, Trade and Industry, and the Ministry of Land, Infrastructure, Transport and Tourism. The reporting body, the General Building Research Corporation of Japan, is a registered certification body under the JIS Mark labeling system.
After reviewing the findings, the General Building Research Corporation of Japan concluded that the quality control system did not meet the standards in Article 2 of the ordinance and that the nonconformities were serious.
Details
The General Building Research Corporation of Japan received a report from a person connected with the certified manufacturer concerning practices that did not comply with quality control standards, and conducted an on-site investigation on October 22, 2026. It confirmed that, over an extended period, the company manufactured and shipped products using types of cement or mixtures different from those in the mix design plans submitted to purchasers, and falsified records to conceal this.
The manufacturer whose certification was revoked is Aso Concrete Industry Co., Ltd. (corporate number 3290001038553). The factory name is the company name, and its address is 2648 Nakahara, Kasuya-machi, Kasuya-gun, Fukuoka Prefecture. The certification date was March 28, 2007, and the certification number is GB0806110. The applicable standard is JIS A 5308, Ready-Mixed Concrete.