{"p":"can-20","op":"mint","tick":"can","amt":"1000","rows":[{"df":"qa","content":[{"q":"Why should we pay attention to the information displayed on the device screen?","a":"Prevention of  faults: By focusing on warning and error messages displayed on the device screen, users can discover potential problems in a timely manner, take appropriate measures to avoid device failures, and reduce maintenance costs."}]}],"pr":"90d46dc7c18ccd66181ebe643fa01767af99d28c9d77ee62d24b1e9333a8d3aa"}