---
title: "Manufacturing Partners & Supply Chain | Powerbridge"
description: "Discover our strategic alliances with leading transformer manufacturers like Yawei and Qintong. We ensure ISO-certified quality across the supply chain."
url: "/partners"
language: "en"
alternates:
  - { language: "zh", url: "/zh/partners" }
---

# Manufacturing Partners

HZ Powerbridge functions as a specialized export agency, linking international grid engineers and specification writers with two leading transformer manufacturers. The agency manages the commercial interface: technical review, compliance documentation, logistics, and after-sales coordination. Manufacturing partners retain full responsibility for design, casting, winding, assembly, and factory testing. This division ensures procurement specifications are met while production adheres to strict quality management standards. Sourced via integrated quality management systems certified under ISO 9001 and OHSAS 18001.

- **Agency Role:** Specification alignment, trade facilitation, and quality oversight on behalf of clients.
- **Partner Factories:** Yawei and Qintong: in-house production, type testing, and certification.

[Request Partner Capability Sheet](/contact)[victoriali@hzpowerbridge.com](mailto:victoriali@hzpowerbridge.com)

Powerbridge

Trusted extension of clients and manufacturing partners in global power trade

Scope of supply

Power Transformers, Grid Transformers, Auto-Transformers, Step Up/Down Transformers, Railway Transformers, Three Phase Pad Mounted Transformers, Oil Immersed Transformers, Isolation Transformers, Pole Mounted Transformers, Dry Type Transformers

## Manufacturing Partners

Powerbridge operates as a trading entity without owned production lines. We represent Yawei and Qintong, coordinating engineering review, quality control, and export logistics for international procurement.

### Yawei Transformer Group

Primary supplier: Power & large distribution transformers

Heavy-transformer facility producing power, grid, and auto-transformers for transmission networks. Yawei manufactures core magnetic and insulation assemblies. Powerbridge manages specification review, witness testing, and shipment documentation.

#### Factory Strengths

- Heavy-duty winding bays for power and auto-transformers
- Integrated vacuum drying and oil-filtration systems
- Routine, type, and special tests up to high voltage class

#### Partner Plant Certifications

- ISO 9001
- OHSAS 18001

#### Collaboration Model

Client specifications undergo joint review by Powerbridge engineers and Yawei design before tooling initiation. Factory acceptance tests are witnessed by Powerbridge inspectors. Test reports are issued under both entities' names.

[View ProductsPower Transformers](/categories/power-transformers)

### Qintong Electrical Equipment

Secondary supplier: Distribution & compact transformers

Specialist in pad-mounted, pole-mounted, and compact distribution units with standardized designs. Qintong provides short lead times on catalogue configurations. Powerbridge handles custom winding, tap-changer, and protection options.

#### Factory Strengths

- High-volume assembly lines for distribution units
- Stocked standard cores and tanks for rapid turnaround
- Integration of custom windings, tap-changers, and protections

#### Partner Plant Certifications

- ISO 9001
- OHSAS 18001

#### Collaboration Model

Standard configurations ship from Qintong inventory. Custom builds follow shared drawing-approval workflows. Powerbridge coordinates component sourcing (bushings, OLTCs, radiators) and consolidates multi-supplier orders into single container plans.

[View ProductsDistribution Transformers](/categories/distribution-transformers)

#### Role Clarity

Production, casting, and assembly occur exclusively at partner facilities. Powerbridge is responsible for technical liaison, third-party inspection coordination, export compliance, and after-sales support.

## Integrated Quality Management

Partner factories operate under certified management systems covering design, procurement, winding, assembly, and factory acceptance testing. ISO 9001 and OHSAS 18001 standards are applied across production lines. HZ Powerbridge audits manufacturing records prior to shipment to ensure compliance with international trade requirements.

ISO 9001

OHSAS 18001

Certificates issued to partner factories; HZ Powerbridge verifies against each order.

### Audit Scope per Certificate

- **Design & Engineering Review:** IEC/IEEE compliance verification at drawing approval stage
- **Incoming Material Control:** Steel, copper, and insulation traceability by heat number
- **Process Inspection:** Winding, core stacking, and drying in-process checkpoints
- **Routine & Type Tests:** Losses, temperature rise, induced voltage, impulse tests
- **Nonconformity Handling:** Corrective actions logged and closed before product release

## Partner Inquiry

Submit manufacturer, scope, and standards. Powerbridge routes to Yawei or Qintong for verified quotations.

- **Email Address:** [victoriali@hzpowerbridge.com](mailto:victoriali@hzpowerbridge.com)

[WhatsApp Support](https://wa.me/861336535686?text=Hello%2C%20I%20have%20an%20inquiry.%20(%2Fpartners))