HAOQI · International supply

Industrial capacitors,
globally supplied.

HANGZHOU HAOQI supplies industrial capacitors for pulsed power, induction heating and power systems. We coordinate product requirements, technical documentation and export delivery.

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Applications

Built for the world's most demanding applications

Pulse Capacitors

Low-inductance, low-ESR pulse capacitors with high energy density and high peak discharge current capability.
Applications & selection

Application · pulsed power & fusion energy

Pulse capacitors engineered for high peak discharge current applications, featuring low-inductance, low-ESR construction with high energy density and excellent pulse life.
Widely used in fusion energy, high-energy physics, pulsed power systems, electromagnetic forming, laser power supplies, and surge current test equipment.

  • Fusion energy
  • High-energy physics
  • Pulsed power systems
  • Electromagnetic forming
  • Laser power supplies
  • Surge current test equipment

High-Voltage Capacitors

High dielectric strength, low partial discharge power capacitors for reactive power compensation and harmonic filtering in AC systems.
Applications & selection

Application · AC system reactive power compensation

High-voltage shunt capacitors for reactive power compensation in AC systems.
Applications include distribution networks, substation capacitor banks and industrial power-factor correction. Harmonic-filter duty requires confirmation of the system conditions.

  • Distribution networks
  • Substation centralized banks
  • Industrial PFC
  • Harmonic filtering
  • Power plant VAR support
  • Large industrial distribution
  • Renewable grid integration

Induction Heating Capacitors

Low tan δ, low temperature rise, long-life resonant capacitors for medium and high-frequency induction heating and melting systems.
Applications & selection

Application · induction heating & melting

Power capacitors for series and parallel resonant circuits in medium and high-frequency induction heating and melting systems, featuring ultra-low dissipation factor (tan δ), low temperature rise, and long service life.
Widely used in induction melting, forging, heat treatment, brazing, surface hardening, and continuous heating production lines.

  • Induction melting
  • Forging
  • Induction hardening
  • Surface heat treatment
  • Brazing
  • Continuous heating lines
  • Foundry
  • Metal holding

DC Capacitors

For series resonant circuits in medium-frequency power supplies and DC filtering in power electronics.
Applications & selection

Application · DC filtering & series resonance

DC capacitors for both IGBT and thyristor (SCR) converter systems, serving series resonant circuit energy storage and DC bus filtering with high ripple current capability and long service life.
Widely used in medium-frequency power supplies, variable-frequency drives, UPS, solar inverters, and industrial motor drive systems.

  • Medium-frequency power supplies
  • Variable-frequency drives
  • UPS
  • Solar inverters
  • Industrial motor drives
  • Power electronic equipment

Special Application Capacitors

Capacitor selection for HVDC equipment, rail transit, high-frequency power supplies and industrial protection circuits, with project-specific requirements to confirm.
Applications & selection

Application · UHVDC, HF power & custom applications

Selection for UHVDC circuit breakers, VSC-HVDC and DC-DC converters, rail traction, high-frequency resonant circuits and grounding protection.
Confirm the electrical, thermal, mechanical and environmental requirements of the selected model. Application names do not establish product certification or performance.

  • High-frequency metallized film capacitors
  • UHVDC circuit breakers
  • VSC-HVDC transmission
  • DC-DC converters
  • Rail transit traction power
  • Grounding protection circuits
Your purchasing process

  1. Share requirements

    Model, application, quantity and destination

  2. Confirm the details

    Specifications, drawings, quotation and timing

  3. Coordinate delivery

    Order progress, documentation and export arrangements

About HAOQI

From product requirements to a clear order

01

Hangzhou Haoqi Import And Export Co., Ltd. is a trading company based in Hangzhou, China. Our current product focus is industrial capacitors for international customers.

02

Whether you have a model number or an application to discuss, HAOQI is your point of contact for specifications, quotations, technical documents and delivery arrangements.

How we work
Purchasing support

Clear information at every step

01

Requirements review

We bring together your application, model and operating conditions to identify the specifications that need confirmation.

02

Technical documentation

We coordinate available datasheets, dimensional drawings and test documents for the selected product.

03

Quotation & order follow-up

We clarify quantity, specifications, timing and supply scope, then follow up the agreed order.

04

Export coordination

We coordinate packaging, delivery documents and shipping arrangements against the destination and order requirements.

Ready to power your next project?

Share your model or application, voltage, frequency, capacitance, quantity and destination. HAOQI will coordinate specification review and a quotation.

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