Data extraction and technical assistance · deep data mining

Strict read-only anti-overwrite process · SHA-256 verification · closed-loop data protection chain

Professional in-depth electronic device inspection and technical assistance in Zhengzhou

In corporate IT audits and everyday business activity, the databases, audio/video files and documents stored on smartphones, computer disks and servers play a critical role in keeping operations running. When accidental deletion, physical damage or a system crash strikes, fast and safe data rescue becomes an urgent need. For complex, difficult devices, Fengniu Tech provides deep data mining, recovery of accidentally deleted chat records, device log tracing and in-depth local data reconstruction. Fengniu Tech has industry-recognised technical recovery capability. For companies, public institutions and partner law firms we provide technically sound low-level data repair, multi-dimensional logical reassembly and a Device Data Inspection and Recovery Technical Statement, keeping the extraction process objective and secure.

Service scope and technical approach

Read-only protection and cloning of device media

Following a strict read-only principle, we clone submitted phones, hard drives and other storage media at hardware write-protection level. A hardware write blocker isolates write commands at the mechanism level, so the original data cannot pick up any secondary modification.

Low-level file fragment reassembly and recovery

For damaged database files, abnormal deletions and similar cases we use logical reconstruction to repair free pages and unallocated fragments at the low level, recovering as much lost audio/video, office documents and local system logs as possible.

Objective technical inspection statement

We issue a formal Device Data Inspection and Recovery Technical Statement for the client, listing the device information, inspection steps, verification hash values and the recovered file list as an objective technical reference on the state of the device.

Special technical partnership with law firms

As a long-term technical partner to several law firms, we provide preliminary damaged-media inspection, data extraction and recovery, and objective technical statements in complex commercial and labour disputes, delivering rigorous behind-the-scenes technical support.

Standardised data recovery and inspection process

1. Registration and ownership verification

Verify device ownership
Record the details and seal the media

2. Read-only isolated cloning

Use a physical write blocker
Create an image that preserves the original data state

3. Hash integrity verification

Calculate MD5 and SHA-256
Ensure the cloned media carries no contamination

4. Analysis and technical report

In-depth logical extraction and fragment reassembly
Output the technical inspection and analysis list

Credentials, tenders and seamless legal liaison

Compliance credentials: Henan Fengniu Electronic Technology Co., Ltd. is registered for electronics repair and data recovery. We are thoroughly familiar with domestic operating system environments (the Xinchuang ecosystem) and have strong front-line capability in government and enterprise tenders and compliance contract approvals.

High-level privacy protection: Data entrusted for recovery is strictly confidential. We sign high-level confidentiality agreements (NDA) with every partner law firm and civil client. The Fengniu lab works on a completely physically isolated local network, with every inspection and recovery step running locally in a closed loop. Within 24 hours of confirmed delivery, the entire drive is irreversibly overwritten and destroyed at the physical level.

Frequently Asked Questions (FAQ)

Our Device Data Inspection and Recovery Technical Statement is simply a list-style account of the objective data recovery process and results for the submitted media. Because we are not an electronic data forensic institute registered with a provincial judicial administrative authority, the document can serve as objective technical evidence or a lead that a party submits to the court, but it cannot be used directly as a state Judicial Inspection Opinion. For the rules on admitting evidence, please follow the evidence provisions of the Civil Procedure Law and your lawyer's guidance.

We follow a strict data imaging and cloning procedure. All recovery and analysis is performed with physical write blockers connected, and we never write directly to the source media. We also generate SHA-256 and MD5 hash values immediately to confirm the storage state is unchanged and the device remains in its original condition.

Our long-term clients include practising lawyers at law firms, and the legal and compliance departments of companies and public institutions that need data inventories and device fault investigations.

When commissioning, both sides complete a Device Inspection and Data Recovery Authorization form and a Submitted Media Handover Checklist, and the submitted media (phones, hard drives, servers and so on) is sealed or photographed on site. We keep detailed records at every step of the data flow, so ownership is clear and the process stays secure and compliant throughout the item's life cycle - submission, logical analysis, technical recovery and return.

For ordinary devices the recovery and analysis cycle is usually 3-5 business days. For urgent corporate data rescue we run a 24-hour fast track, putting a technical team on closed continuous shifts; in the best case we can provide interim recovery results and an inspection list within 24 hours.