RFI EMI Filter | High-Performance EMI/RFI Filtering & Shielding Solutions

Your Reliable EMI Filter Partner

Changzhou Haozhuo Electronic Co., Ltd. is a professional and renowned EMI filter manufacturer with over a decade of experience in electromagnetic interference (EMI) and radio frequency interference (RFI) suppression.

Our technical team has in-depth knowledge of international safety standards including UL, VDE, CSA, CE, and CQC. We specialize in solving EMI problems quickly, effectively, and at low cost across various industries such as industrial automation, medical imaging, aerospace, and defense.

2012

Founded

100+

Employees

1M+

Annual Sales (USD)

100+

Global Clients

Our Product Categories

We focus on high-performance EMI suppression and RF shielding technologies

EMI Power Line Filter

Signal Line Filters

EMI Feedthrough Filter

Pyramid Absorber

Ferrite Tile Absorber

RF Shielding Room

Top Products

High-quality EMI/RFI filters and shielding solutions trusted worldwide

1A 3A 5A 10A Vfd RFI EMI Filter

FM Radio Frequency Interference Filter With Fuse Switch – Ideal for variable frequency drives and industrial control systems.

• Voltage: 240V / 250VAC
• Current: 1A to 10A
• Integrated fuse switch
• Complies with UL, CE, VDE

240V 250VAC 30A DC RFI EMI Power Line Filter

Single-phase DC noise filter for high-power inverters and renewable energy systems.

• Rated current: 30A DC
• Voltage: 240V / 250VAC
• Low insertion loss
• High surge protection

250VAC 25A Electrical Vacuum Power RF Feedthrough Capacitor

250VAC 25A RF Feedthrough Capacitor

High-reliability feedthrough filter for MRI and RF shielding applications.

• Voltage: 250VAC
• Current: 25A
• Vacuum sealed design
• Low ESR & ESL

120–250VAC 16A EMI Power Line Filter

Single-phase EMI interference filter for VFDs and industrial equipment.

• Input: 120–250VAC
• Current: 16A
• Compact DIN rail mount
• Complies with IEC/EN 60939

5.2mm Thickness Ferrite Tile Absorber

Used in 3m EMC anechoic chambers for high-frequency absorption.

• Thickness: 5.2mm
• Frequency range: 30MHz – 1GHz
• High permeability
• Standard 6.7mm also available

Customized BeCu Finger Strip

Beryllium copper EMI gasket for RF shielding rooms and enclosures.

• High conductivity
• Corrosion resistant
• Custom lengths & shapes
• 70–100dB shielding effectiveness

1350mm 3oz Electrolytic RF Shielding Copper Foil

For MRI Faraday cages and high-performance RF shielding applications.

• Width: 1350mm
• Thickness: 3oz (105μm)
• Conductive adhesive backing
• Low surface resistance

High Power RF Pyramid Absorber Foam

Microwave absorbing materials for EMC shielding rooms and anechoic chambers.

• Absorption up to 100dB
• Frequency: 800MHz – 40GHz
• Flame retardant & durable
• Custom pyramid sizes

Why Choose Us?

Certified Quality

Products compliant with UL, VDE, CSA, CE, CQC, and military standards (GJB151A/GJB152A).

High Power Handling

Designed for industrial inverters, medical MRI, and high-power RF systems up to 15kW.

Global Support

Serving over 100 clients worldwide with fast response and technical support.

Custom Solutions

We offer tailored EMI filters, absorbers, and shielding systems based on your specs.

Advanced Testing

Equipped with spectrum analyzers, LCR bridges, shield rooms, and interference testers.

Fast Delivery

Efficient production and logistics ensure timely delivery of your EMI solutions.

Frequently Asked Questions

What is an EMI power line filter?

An EMI power line filter suppresses electromagnetic interference in electrical power lines, preventing noise from entering or exiting electronic equipment. It ensures compliance with EMC regulations and improves system reliability.

Can you customize EMI filters for specific voltages?

Yes, we offer custom EMI filters for various input voltages (120V, 240V, 480V) and currents (1A to 100A), including three-phase and DC configurations.

What standards do your products comply with?

Our products meet UL, VDE, CSA, CE, CQC, and military standards such as GJB151A and GJB152A. We also comply with industrial standards like IEC61800-3, EN12015, and EN55011.

Do you provide technical support?

Yes, our experienced technical team provides full support in filter selection, installation guidance, and EMI troubleshooting for your application.

What is the lead time for custom orders?

Typical lead time is 2–4 weeks depending on complexity. We prioritize urgent requests and maintain fast communication throughout production.

Ready to Get a Quote?

Send us your requirements and we’ll respond within 24 hours with a competitive quote.

Visit Official Website to Contact

Changzhou Haozhuo Electronic Co., Ltd.

Phone: 86-15206110683

Email: emcfilter18@gmail.com

Address: No.5 North Wuqing Road, Changzhou, Jiangsu, China

Professional EMI/RFI Filter & RF Shielding Solutions