On 2 June 2026, Ministry of Economy, Trade and Industry (METI) of Japan, together with the relevant competent ministries responsible for the Chemical Substances Control Law (CSCL), published revised guidance on chemical import customs procedures and notification requirements. The update clarifies the procedures importers must follow to demonstrate compliance with the CSCL when importing chemical substances into Japan. The revised notification provides updated administrative instructions for customs clearance, including documentation requirements, applicable notification categories, and procedures for determining whether imported substances are subject to pre-manufacture or pre-import notification, exemptions, or other regulatory obligations under the CSCL. It also explains the handling of new chemical substances, existing chemical substances, polymers, intermediates, and other categories regulated under the law, helping importers identify the appropriate compliance pathway before customs processing. The guidance is intended to improve consistency in regulatory implementation, facilitate communication between businesses and customs authorities, and ensure that imported chemicals meet Japan's environmental and human health protection requirements. By updating these operational procedures, the authorities aim to strengthen compliance, enhance the efficiency of import administration, and support the effective enforcement of Japan's chemical management framework.
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