Reduce procurement cost by up to 30% while meeting strict CE, RoHS & ISO‑9001 standards – ideal for Purchasing Managers, Technical Directors and Operations Leaders. Result: Production bottlenecks, warranty claims, and lost market share.
ei 57 Transformer – High‑Efficiency OEM/ODM Solution for Audio, Medical & Industrial Applications
Reduce procurement cost by up to 30% while meeting strict CE, RoHS & ISO‑9001 standards – ideal for Purchasing Managers, Technical Directors and Operations Leaders.
John M., Procurement Manager, AudioTech USA – “Switching to Xinchangda’s ei 57 transformer cut our component cost by 28% and improved sound clarity. Delivery was 9 days vs. 45 days before.”
Dr. Lisa K., Lead Engineer, MedEquip Corp. – “The CE‑certified design met our FDA submission timeline. Failure rate dropped from 4.2% to 0.7% after implementation.”
Certificates:
Frequently Asked Questions
What is the minimum order quantity (MOQ) for ei 57 transformers?
Our standard MOQ is 1,000 pieces. For prototype or test runs, we can produce as low as 100 units with a short‑lead‑time surcharge.
Can you customize winding ratios or shielding for specific applications?
Yes. Our 10 R&D engineers work with you to develop OEM/ODM designs, including custom turns, core shapes, and EMI shielding.
What certifications do the ei 57 transformers carry?
All units are CE, RoHS, FCC, VDE, and ISO 9001 certified. We can provide test reports on request.
How is shipping handled for US customers?
We offer DDP (Delivered Duty Paid) via air or sea, with real‑time tracking. Typical air‑freight delivery to the US West Coast is 4‑6 days after production.
What after‑sales support is available?
24/7 technical hotline, free design verification, and a 12‑month warranty covering material defects.
Or call us directly at +86 131 2825 6415 (Mon‑Fri, 9:00‑18:00 CST)
What Our Clients Say
Emily R., Senior Buyer – SoundWave Inc.
“The sample arrived in 3 days, and performance exceeded specs. We placed a 20 k unit order and saved $150k annually.”
Mark T., Operations Manager – MedCore Solutions
“Compliance documentation was flawless, speeding up our FDA submission. Zero returns in the first 12 months.”
Susan L., Procurement Lead – GreenEnergy Systems
“Fast 10‑day delivery kept our inverter line on schedule. The transformer’s thermal performance is outstanding.”
About the Author
David Chen, Ph.D. – Senior Magnetics Engineer with 18 years of experience in transformer design for audio, medical, and renewable‑energy markets. Published author of “Modern Magnetic Component Design” (2024) and lead consultant for over 30 Fortune‑500 procurement projects.
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