1. Free maintenance within 180 hours. In the following cases, no "three guarantees" service will be provided. Poor product appearance (scratches, deformation, rust, corrosion, breakage, etc.)
2. Damage caused by unauthorized modification or self-repair, including loss of graphics card iron baffle, removal of cooling fan or fin, residual solder on PCB board, etc.
3. The fan is fragile or damaged. The barcode label of the product is torn, damaged, blurred, altered, or counterfeited.
4. Products damaged due to improper transportation and storage by users. Damage to products caused by irresistible
natural factors, such as: gold finger burn, loss of electronic components, PCB deformation, collision scar, etc
5. The BOIS chip is lost or burned out because the BIOS content is modified without authorization
6. Defects such as burn, breakage and corrosion can be detected.