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• [2024/08/28] Grand Sumo App [ver 1.10.12]release
• [2024/08/07] 08/08,08/25 Maintenance of "Information (Help) and Inquiries"
• [2024/05/27] Grand Sumo App [ver 1.10.10]release
• [2023/08/31] Grand Sumo App [ver 1.10.8]release
• [2023/07/27] 7/28 Maintenance of "Information (Help) and Inquiries"
• [2023/06/23] Grand Sumo App [ver 1.10.7]release