The validity period starts from the delivery and signature acceptance of the equipment, and all damages caused by human error, accidental damage, and malfunctions caused by illegal operations are not covered by the warranty. During the warranty period, users will receive various timely response and support services, including flexible methods such as hotline, WeChat, email, etc. Outside the warranty period of the equipment, Shifx provides paid maintenance services and can selectively charge for parts and spare parts according to our situation, while also providing free maintenance.