（7） If the battery fails to meet the performance requirements,
please stop using it immediately and contact the after-sales
service center for handling.
（8） Please use our original label paper, failing to do so may result
in poor print quality or even damage to the print head.
（9） After printing using thermal printing paper, the preservation
time of handwriting is related to the quality of thermal printing
paper. If you want to print documents that need to be kept for a
long time, please choose long-acting thermal printing paper.
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