The following circumstances will not be processed for returns

For out-of-warranty products (commodities that exceed the warranty period of three guarantees)

Product quality problems caused by unauthorized maintenance, misuse, collision, negligence, abuse, fluid intake, accident, modification, incorrect installation, or damage, or tearing, alteration of labels, machine serial numbers, anti-counterfeiting marks; The outer packaging, accessories, gifts, manuals are incomplete, invoices are missing or altered; damage caused by force majeure; identification codes do not match