Group 1 - The measurement devices used at the Fukushima nuclear power plant were not properly tested and allegedly had falsified test certificates [2][4] - 90% of the problematic devices were used to monitor radiation effects on humans, while others measured radiation levels in the air [4] - Chiyoda Technics Co., which produced the devices, sold them to the Fukushima plant without completing the necessary tests, leading to concerns about data integrity [4] Group 2 - The Fukushima nuclear disaster in 2011 was preceded by a history of data falsification, with 199 instances of data manipulation reported since 1977 [4] - Despite the issues with the measurement devices, local authorities stated that there were other functioning devices in place, mitigating health and safety concerns [4] - Chiyoda Technics issued an apology regarding the incident on October 30 [4]

Core Viewpoint - The Chinese National Nuclear Safety Administration announced the results of safety assessments regarding seawater and marine life near the Fukushima Daiichi Nuclear Power Plant, indicating no abnormal levels of radioactive isotopes detected for the first time [1]. Group 1 - The analysis included samples for tritium, cesium-134, cesium-137, and strontium-90, with no abnormal activity concentrations found [1]. - This marks the first time China has confirmed and published results regarding the safety of not only seawater but also marine products [1]. - In October 2024, the Chinese government sampled treated water after Japan's discharge and reported no abnormalities in January 2025 [1]. Group 2 - In late February, China participated in additional monitoring by the International Atomic Energy Agency (IAEA), collecting samples of marine life [1].