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Eliminate over‑pricing and quality gaps – ideal for Purchasing Managers, Technical Directors, and Operations Leaders in the USA.
Result: Project delays, budget overruns, and lost competitive advantage.
| Parameter | Typical Range | Unit |
|---|---|---|
| Power Rating | 5 VA – 5 kVA | |
| Primary Voltage | 110 – 480 | V |
| Secondary Voltage | Custom | V |
| Efficiency | ≥ 95% | |
| Operating Temp. | ‑40 ~ +85 | °C |
| Certifications | CE, RoHS, UL, FCC, ISO 9001 |
“Xinchangda reduced our transformer cost by 34% and cut lead time from 10 weeks to 2 weeks. The CE‑certified units passed our FDA audit on the first try.” – John Miller, Procurement Director, MedTech USA
“The custom winding geometry allowed us to shrink our PCB by 18% while maintaining 98% efficiency.” – Linda Chen, Senior Electrical Engineer, GreenEnergy Corp.
Certificates: CE, RoHS, FCC, UL, ISO 9001, VDE, CB, GS
Q1: How fast can you deliver a prototype for a 500 VA custom toroidal transformer?
A: Standard 7‑day prototype service (including electrical testing and certification).
Q2: Do you support OEM branding and packaging?
A: Yes – we provide white‑label boxes, custom silk‑screened nameplates, and compliance labels.
Q3: What are the payment terms for a first‑time US buyer?
A: 30% T/T deposit, 70% against B/L; Letter of Credit accepted for orders > $50,000.
Q4: Can you handle RoHS‑free and lead‑free solder requirements?
A: All our transformers are RoHS‑compliant; we can supply lead‑free solder upon request.

Q5: How do you manage after‑sales service?
A: Dedicated after‑sales team offers 12‑month warranty, on‑site failure analysis, and spare‑part logistics.
Q6: Are your factories audited for occupational safety?
A: Yes – ISO 45001 safety management system, regular third‑party audits.
Limited Offer: Free engineering sample for orders placed before May 31 2026. Stock is limited to 200 units.
Or contact us directly:
📞 +86 131 2825 6415 (WeChat/WhatsApp) | ✉️ grace01@xinchangdadz.com
James Li, Ph.D. – Senior Magnetic‑Component Engineer with 12 years of OEM/ODM experience in transformer design for medical and industrial markets. Published author of “Advanced Toroidal Magnetics” (2023) and regular speaker at IEC conferences.
Contact: grace01@xinchangdadz.com | Phone: +86 131 2825 6415