on-site diagnosis
repair warranty
most jobs scheduled
all Shanghai
No games: we tell you if it's fixable, and flag replacement parts upfront

Read-only imaging before recovery to avoid further damage. Clicking drives are opened in a cleanroom.
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On-site survey to place points, with cameras, storage and remote viewing set up in one go.
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Points planned by workstation, neatly run, tested and labeled before handover.
Book nowMost jobs in Caolu Town can be scheduled the same day, with our technician bringing full tools and parts
Business clients get repair invoices and itemized records for reimbursement.
Most jobs can be scheduled the same day; we confirm the time by phone.
Common parts are carried in the van, so most faults are fixed on the spot.
Diagnose step by step, locate first, then quote
NTP time sync across devices for reliable evidence later.
Replace with a surveillance-grade drive; image first to salvage recoverable footage.
Check bitrate, drive and bandwidth, then adjust.
Correct lens, lighting and white balance.
On-site diagnosis is free; the final price follows the itemized quote after diagnosis, and you confirm before we repair
| Item | Price range | Notes |
|---|---|---|
| SSD recovery | RMB 800–2500 | Controller / chip-level read |
| RAID array recovery | From RMB 2000 | Quoted by disk count and RAID level |
| Backup solution setup | From RMB 300 | Local + off-site, automated |
| Old-PC data migration | RMB 100–300 | Full-disk clone or selective migration |
| Survey & plan | Free | Survey + point design + budget quote |
| HD camera installation | RMB 200–500/channel | Includes mount, tuning and 1-year warranty |
From the first call to acceptance and payment, in a few steps
Point map + test record, 1-year workmanship warranty
Tell us how it was lost and what you did; we call back within 30 minutes
No writes at all until we know the recoverable range
You confirm before we start; no mid-job price changes
We do a lot of this type of work, so diagnosis and spares are well covered

The client needed to operate normally during the day, so we came after hours. Several staff worked in parallel and finished testing and cleanup before closing.

A cross-border e-commerce client working in Jinqiao Export Zone had devices failing and holding up progress. We visited by appointment and handled them in groups, restoring normal use the same day and logging the devices into a table.

A international schools client in Lingang New Area had a device go down suddenly. We judged the fault direction by phone, and our technician brought matching parts and completed repair and testing the same day.
What you most want to know about on-site service in Caolu
Yes. A few panels, modules or connectors are billed per point and tested for continuity on the spot.
We schedule after hours or on weekends where possible, and screen and clean up the work area. Daytime jobs are done section by section and restored immediately.
Every point is labeled and tested, and you get a point map and test record so later adds and troubleshooting are easy to locate.
Yes. We measure signal during the survey and plan AP points and cabling together, avoiding a second round of work.
Small jobs are usually half a day to a day; larger areas are done section by section.
Yes. We measure signal during the survey to avoid a second round of work.
Describe the device and the symptoms; our technician brings the right tools and common parts. Diagnose first, quote after, and repair only once you approve.
WeChat ID: 17887942669
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On-site in Caolu Town, surrounding subdistricts and all of Pudong