We offer our customers a 30-day return service (from the day after delivery) and a 1-5 year warranty (please refer to the product description for the exact duration of the warranty). Simply provide us with your order number on our contact page (or contact us online on our website) or by email at sishine@outlook.com,Whatsapp +86 13967852415 and we will send you a new replacement or send you new parts as appropriate.