You can apply for product warranty service in the following ways:

①Online chat link for quick answers to any questions: https://www.kfconcept.com/live/chat (Service hours: 07:00-24:00 Pacific Time)

②English phone contact: 888-968-9186 (Service hours: 07:00-24:00 Pacific Time)

③Customer e-mail inquiry (reply within 24 hours): https://www.kfconcept.com/support/contact?key=1

Please provide your order number and a description of the product problem, and customer service will assist you with your warranty claim.