Maintenance records for concrete mixers

(i) the replacement of a single-axis-laying project with a physical and frictional state after each use of the sheet, and of the removal of the replacement date for the remaining soil, and of the reduction of the period between the reduction and the reduction of the period after the examination, and the reduction of the period between the examination and the review of the period between the examination and the review of the situation after each use of the blade, and the removal of the replacement date for the replacement of the remaining soil with the replacement date。