Who we serve
Our products are used in EV OBC and DC-DC converters, EV charging stations, solar inverters, energy storage converters, industrial power supplies, medical power systems, rail transit power systems, and communication power supplies.
Engineering focus
Core capabilities include flat copper wire winding, nanocrystalline and amorphous core applications, low DCR design, thermal optimization, EMI filtering, and custom magnetic component design based on customer electrical parameters.
Quality position
ProMagTech applies documented incoming, in-process, and outgoing inspection controls. Manufacturing evidence including workshop photos, process records, an anonymized OQC report, and product specification files is published at the manufacturing evidence page. ISO 9001 certification is not claimed unless supported by a current certificate.
Manufacturing Capability
Factory floor area: approximately 2,000 m². Core production equipment includes CNC flat wire winding machines, automatic core dispensing systems, laser stripping stations, semi-automatic soldering lines, laser marking equipment, and forming machines. In-house test capability covers inductance, DC bias inductance, leakage inductance, DCR, turns ratio, inter-turn test, hi-pot, and insulation resistance.
Delivered Capability Reference
ProMagTech has delivered custom flat wire inductors at 120 μH / 300 A with measured DCR of 6 mΩ for solar energy storage PCS applications. At 300A rated current, 6 mΩ DCR represents approximately 60% lower conduction loss compared to equivalent round wire designs (typical 10–15 mΩ in the same window area). This is the current high-end delivered reference for ProMagTech flat wire inductor capability.
Inspection Scope
Outgoing inspection can cover inductance, DCR, hi-pot, and insulation resistance according to the approved drawing and project inspection plan. An anonymized OQC report is available from the manufacturing evidence page.