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Precision Test Leads &
Probes Manufacturer

With 17+ years of R&D and production experience, CZFENFEI delivers high-performance electrical test solutions trusted by laboratories, engineers, and industrial professionals worldwide.

Explore Products Learn About Us

Trusted Since 2006

Changzhou Fenfei Technology Co., Ltd. has been a leading manufacturer of test leads, probes, alloy wires, and electrical connectors for over 17 years. Our R&D laboratory ensures every product meets the highest standards of durability, conductivity, and safety.

From multimeter test leads to high-purity nickel and silver wires, we serve industries ranging from aerospace and automotive to electronics and education. Our global clients rely on CZFENFEI for consistent quality and technical innovation.

17+
Years Experience
Global
Distribution
CZ Fenfei R&D Lab

Our Product Range

Precision-engineered electrical components for testing, measurement, and industrial applications.

Retractable Test Leads

Retractable Test Leads

Durable, spring-loaded retractable leads for multimeters and testers. Ideal for field service and industrial diagnostics.

  • High-flex insulation
  • 1000V safety rating
  • Nickel-plated contacts
Multimeter Test Lead Kits

Multimeter Test Lead Kits

Complete sets with banana plugs, alligator clips, and protective cases. Designed for professional electrical testing.

  • CAT III 1000V / CAT IV 600V
  • Silicone insulation
  • Ergonomic grips
Nickel Base Alloy Wire

Nickel Base Alloy Wire

High-temperature resistant Inconel 600, X750, 718 wires for aerospace and industrial heating applications.

  • 0.025mm to 2mm diameter
  • Tensile strength up to 2200MPa
  • Superalloy grade
Pure Nickel Wire

Pure Nickel Wire (Ni200/Ni201)

99.98% pure nickel wire for electric apparatus, aerospace, and chemical processing industries.

  • 0.025mm ultra-fine gauge
  • High purity NP1/NP2
  • Corrosion resistant
Pure Silver Wire

Pure Silver Wire (99.999%)

OCC twisted sterling silver wire with 4N to 5N purity for high-end audio and precision instrumentation.

  • 99.999% Ag purity
  • Low resistance conductivity
  • Ideal for R&D labs
Test Probes & Clips

Test Probes & Alligator Clips

High-conductivity probes and clips with serrated jaws for secure connections in testing environments.

  • Nickel-plated copper
  • Heat-resistant insulation
  • 15A current rating
BNC Test Lead Kits

BNC Test Lead Kits

Precision coaxial test leads with BNC connectors for oscilloscopes and RF measurement equipment.

  • 50Ω impedance
  • Shielded construction
  • 3GHz bandwidth
Automotive Test Lead Kits

Automotive Test Lead Kits

Heavy-duty leads designed for vehicle diagnostics, battery testing, and engine analysis.

  • Oil and fuel resistant
  • 1000V insulation
  • Includes OBD2 adapters
View Full Product Catalog

Why Choose CZFENFEI?

R&D Laboratory

Our in-house laboratory ensures every product undergoes rigorous testing for conductivity, durability, and safety compliance.

Industrial-Grade Quality

Engineered for professional use in harsh environments, our components meet international safety standards.

Global Support

We provide technical documentation, product samples, and responsive support to clients worldwide.

17+
Years in Business
50+
Countries Served
200+
Product SKUs
100%
Quality Tested

Frequently Asked Questions

What are alligator clips used for?

Alligator clips are elastic metal clips with serrated jaws used to establish temporary electrical connections. They are commonly used in laboratories, electronics testing, and automotive diagnostics to connect wires to batteries or components.

Do you offer custom test lead configurations?

Yes, CZFENFEI provides OEM/ODM services. We can customize lead length, insulation type, connector types, and packaging based on your specifications.

What is the purity of your pure nickel wire?

Our pure nickel wire (Ni200/Ni201) has a minimum purity of 99.98%, meeting ASTM B725 standards. We offer NP1 and NP2 grades for different industrial applications.

Are your test leads safety rated?

Yes, our multimeter test leads comply with CAT III 1000V and CAT IV 600V safety standards. All products undergo high-voltage insulation testing before shipment.

Get in Touch

For product inquiries, samples, or technical support, contact our team directly.

Phone

+86 – 519 – 86731588

Email

[email protected]

Location

Changzhou, Jiangsu, China

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