To the after-sales to provide the body barcode check. Haier air conditioning is networked at the time of installation, the staff will record the model, body barcode and installation time together in the background big data, if the user wants to check, you can call the customer service number on the back side of the air conditioning and inform the after-sales staff of the Haier air conditioner's body barcode, wait for 10-20 seconds to know.