Thank you for choosing our products. Please read the instructions carefully before using the products. During the after-sales service period of Jinruilong, if the product has quality problems in accordance with the requirements of the manual and during normal use, please consult Jinruilong's after-sales service department or fill in the customer's request on the official website. Jinruilong will provide free maintenance, overhaul and other services according to the situation. If the product has no quality problems or has exceeded the after-sales service period, Jinruilong will provide paid maintenance and overhaul according to the situation, and the additional costs such as freight and inspection fees will be borne by the customer.