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The registry and analysis of occupational exposure is significant for radiation protection against ionising radiation. This paper presents the current status of the 'Chinese Registry of Radiation Workers (CRRW)' and trends as well as the distribution of occupational exposure to ionising radiation in China from 2009 to 2018. A database with total 6.6 million monitoring records from 820 000 workers in 85 000 radiation units for medical uses, industrial uses and miscellaneous uses is established by the CRRW. The Mann-Kendall test shows s
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