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(1)Deletion of obligations to use incombustible materials – Lee Myung-bak 2012
(2)Duty to use incombustibility due to the revision of potters – Moon Jae-in 2020
(3)Construction of the accident section was started in 2012
(4)Lee Myung-bak
Ferry Sewol has also changed the old and dangerous Japanese cruise ship law It’s not an accident