1. ATOP's products all passed rigorous testing of high-temperature dynamic aging and passed ISO9001 , ROHS
CE and FCC certification.

2. All life guarantee, and three years free replacement.
All life warranty.Toll-free repair period is three years(counted from the date when the invoice is issued .)

3. 24h Hotline consultation
ATOP provides 24h hotline service a day, our hotline number is 400-183-1888
Our service staff will provide prompt service support for you.

4. Conditions for toll-free repair exempted
Please choose toll maintenance service under the following condition:

• Toll-free service period expired ;
• Malfunction and damage caused by incorrect installation, storage and use implemented by users.
• Malfunction and damage caused by incorrect installation, maintenance and alternation implemented by unauthorized organization and personnel.
• Malfunction and damage caused by accident or man-made matter(including computer virus, operation failure, falling, extrusion, submersion, dampness, unmeet voltage input,etc. )
• Failure or damage caused by natural disaster(earthquake, fire, thunder, fire,etc.) force majeure.
• Malfunction and damage caused by quality problem of other products and parts.