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Business 2026-06-06 10 min readBy Ziyao Export Team

OEM & ODM Transformer Manufacturing: Complete Partnership Guide

How OEM and ODM transformer manufacturing works. Brand customization, technical specifications, minimum order quantities, and partnership process for international distributors.

OEM vs ODM: What's the Difference?

OEM (Original Equipment Manufacturing): We manufacture transformers to your exact specifications under your brand. You provide the design, standards, and nameplate specifications.

ODM (Original Design Manufacturing): We design and manufacture transformers that you brand as your own. Our engineering team adapts our proven designs to meet your market requirements.

Branding Options

  • Nameplates: Your company name, logo, and contact information on stainless steel or aluminum nameplates
  • Paint: Custom RAL color matching for enclosures and tanks
  • Documentation: Test reports and manuals with your letterhead
  • Packaging: Branded crates with your company identity

Technical Customization

We can adapt to your specific requirements:

  • Voltage ratios matching your regional standards
  • Frequency: 50Hz, 60Hz, or dual-frequency
  • Cooling: AN, AF, ONAN, ONAF, or custom configurations
  • Protection accessories per your specifications
  • Tap changer configurations: NLTC or OLTC

Partnership Process

  1. Requirements Review: Share your specifications, target market, and branding requirements
  2. Sample Production: 1–2 sample units for approval (4–6 weeks)
  3. Testing & Approval: Routine tests + type tests at KEMA/CESI if required
  4. Series Production: Upon approval, lead time 4–8 weeks for batch orders

Minimum Order Quantities

Custom branding typically requires minimum 5–10 units for distribution transformers, or 20+ units for smaller products (MCCB, meters). Contact our export team for specific MOQ requirements for your product category.

Quality Assurance

All OEM/ODM products undergo the same rigorous testing as our standard products: winding resistance, ratio verification, dielectric tests, and routine test reports. Third-party inspection (SGS, BV, TÜV) is supported.

Need Technical Support?

Our engineering team can help with product selection, specifications, and project requirements.