Your one‑stop source for high‑performance transformers, inductors, and crossovers – engineered for audio, medical, new‑energy & industrial markets. Corporate purchasing managers in the USA repeatedly encounter the same three obstacles when sourcing transformers: According
“Xinchangda delivered our custom 2 kW medical transformers in 9 days, with zero defects. The technical support team helped us pass FDA validation on the first attempt.” – Dr. Emily Chen, CTO, MedTech Solutions (USA)
Certificates: ISO 9001, CE, RoHS, VDE, FCC, CB, GS, SAA
Frequently Asked Questions
How does the OEM design process work?
After you submit your electrical specifications, our R&D team creates a 3‑D model and prototype within 7 business days. You review the sample, request any tweaks, and we lock the final design for mass production.
What payment terms do you accept for US buyers?
We offer T/T 30 days after delivery, L/C at sight, and PayPal for small‑batch orders. Credit checks are performed once per corporate account.
Can you ship directly to a US distribution center?
Yes. We partner with DHL, UPS, and FedEx for door‑to‑door service. For bulk shipments we use ocean freight to Los Angeles, New York, or Savannah ports with customs clearance assistance.
What after‑sales support is included?
A dedicated account manager, 24/7 technical hotline, free replacement for any defective units within 12 months, and optional on‑site calibration at your facility.
John Miller, Procurement Manager, GreenTech Energy (USA) – “Xinchangda’s fast‑track production cut our lead time from 45 days to 9 days, saving us $45 k per quarter.”
Linda Garcia, Senior Engineer, SoundWave Audio (USA) – “The custom audio transformers matched our impedance specs perfectly; sound clarity improved by 12%.”
Michael Chen, Operations Director, MedPulse Inc. (USA) – “Zero‑defect delivery and comprehensive documentation helped us pass FDA audit on day one.”
Alex Zhao – Senior Magnetic‑Component Analyst
Over 15 years in transformer OEM/ODM, former lead engineer at a Fortune 500 power‑electronics firm, author of “Global Transformer Procurement Strategies” (2024). Regular speaker at IEC & IEEE conferences.
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Certificates: ISO 9001, CE, RoHS, VDE, FCC, CB, GS, SAA