It is forbidden to lengthen the safety belt without authorization. If a long rope of 3m or above is used, a buffer must be added, and all parts shall not be removed at will.<br>The safety belt shall be inspected once every 12 months; if it is not used in June, it shall be checked before use; it shall be replaced after effective use;<br>The safety belt should be checked once after 2 years of use;<br>The service life of the safety belt is 3-5 years, and it should be scrapped in advance in case of abnormality.<br>
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