Value-added services

Device SN Query

Enter serial number to verify model, warranty & factory info

SN verification

Serial numbers are usually on the device label or carton (10–20 alphanumeric characters)

Barcode scanner, camera, photo OCR, or manual entry

Max 10 queries per IP per day Encrypted in transit Results cached for 1 hour Authenticity verification

Usually on a label on the back or bottom of the device; some cartons also show it. SN is typically 10–20 alphanumeric characters.

Double-check the SN (0 vs O, 1 vs I). If it is correct, call 021-62279227 and an engineer will help verify.

Yes. Expired devices can still buy extensions; pricing depends on model and age. Contact sales or call 021-62279227.

Factory records are authoritative. Provide purchase proof (contract/invoice) via your sales rep or the hotline for correction.

One SN per query today. For bulk checks (e.g. acceptance), contact sales or open a ticket for batch verification.

Our team is ready for device verification and technical support