Pure Copper The Foundation of Power
Ultimate conductivity 101% IACS, exceptional thermal and ductility. We provide full copper solutions from micron foils to heavy busbars.
RAYTRON is a specialized manufacturer of high-purity copper wire and strip, offering a complete product range from Φ0.05mm fine round wire to 0.035mm ultra-thin copper foil. Our electrolytic copper products achieve purity above 99.9% and conductivity up to 101% IACS, strictly compliant with ASTM B3, B187, and GB/T 3953 standards. RAYTRON copper is widely used in power transmission, electric vehicles, electronic components, and industrial equipment, available in both annealed and hard-drawn tempers.
Top Conductivity
Second only to silver
Superb Weldability
Easy for electrical joints
100% Recyclable
Eco-friendly material
Why Copper is the Optimal Choice
Despite alternatives, high-purity copper maintains the gold standard in efficiency, reliability, and total lifecycle cost.
Efficiency Lead
Conductivity is 60% higher than aluminum per unit volume, drastically reducing energy loss in large-scale applications.
Thermal Master
Thermal conductivity 1.7x higher than aluminum, making it ideal for semiconductor cooling and heat exchangers.
Copper vs Aluminum Performance
Key Application Areas
PV Ribbon & Solar
HJT/TOPCon busbar/finger ribbon — highest conductivity, dedicated for HJT low-temp process, tinned/silvered/high-purity
Key Customers
LONGi / JA Solar
Copper Series
High-purity electrolytic grades across wire, strip, and foil categories
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Copper Flat Wire
Electrolytic Copper (Cu)
Copper Ribbon Wire
Electrolytic Copper (Cu)
Technical FAQ
Understanding physical properties and application details
What is the purity of Raytron copper products?
How to choose between annealed and hard-drawn copper?
Do your products comply with international standards?
What specifications are available for copper foils?
Ready to Optimize Your Project?
Our engineering team is ready to provide material selection advice and technical support