The BDV tester works perfectly—really good equipment. I’m very satisfied with the quality, and I’m already planning to order a milliohm meter from ZHIWEI for my next project.
Angel R.Electrical Contractor, Peru



Fully compliant with IEC & ASTM standards. Over 20 years of expertise helping power utilities prevent critical failures.






With over 20 years of focused expertise, we don't just sell equipment;
we deliver confidence and security for your critical assets.
Broad compliance: Fully meets IEC, ASTM, and ISO testing protocols
High accuracy: Ensures precision for rigorous oil quality analysis
Audit ready: Helps you easily meet technical requirements

One-stop portfolio: Covers BDV, DGA, Flash Point, and Viscosity, etc.
Deep expertise: Two decades of specialization in diagnostics.
Risk reduction: Proven to prevent catastrophic transformer failures

Lifetime assistance: Ongoing technical support and remote calibration guidance.
Worry-free warranty: Standard 1-year warranty included for peace of mind.
Zero downtime: Fast response aimed at keeping your projects running.

Discover what our clients have to say
Yes. Every unit is strictly calibrated before leaving the factory and comes with an internal calibration report. We also support third-party calibration if required by your local regulations.
For standard models, we maintain stock for immediate dispatch within 5-10 business days. We offer air express (DHL/FedEx) for urgent needs and sea freight for bulk orders to optimize your costs.
Yes, as a manufacturer, we offer full customization. We can modify voltage standards, software interfaces, and even brand the equipment with your logo (OEM) to meet your specific project requirements.
We provide a 24-hour response guarantee. Replacement parts are shipped via express courier, and our senior engineers provide video guidance to ensure your testing resumes as quickly as possible.
Join 500+ Power Plants and Laboratories that trust ZHIWEI for their critical asset monitoring.