C11000 copper, commonly known as Electrolytic Tough Pitch (ETP) copper, represents the global standard for high electrical and thermal conductivity. As the world pivots toward the Green Energy Transition and Industry 4.0, the demand for C11000 copper bars has surged exponentially. With a minimum conductivity rating of 100% IACS (International Annealed Copper Standard), C11000 is the backbone of modern power distribution, renewable energy systems, and high-frequency communication infrastructure.
In the New Energy Vehicle (NEV) sector, C11000 copper bars are utilized for busbars and battery connectors due to their superior current-carrying capacity and ease of fabrication.
High-frequency signal transmission requires materials with minimal impedance. C11000 provides the necessary physical properties for 5G base station components.
Thermal management is critical in aerospace. The high thermal conductivity of ETP copper ensures efficient heat dissipation in compact electronic modules.
Established in 2017, Sichuan Kepai New Materials Co., Ltd. is a high-tech enterprise integrating research and development, production, and sales. We are at the forefront of the national 13th Five-Year Plan for strategic emerging materials. Our expertise spans tellurium copper, high-conductivity oxygen-free copper, silver copper, and dispersion copper.
Located in the western area of the Sichuan Guanghan Industrial Development Zone, Kepai leverages superior geographical logistics. We adhere to "innovation-driven development, quality wins the market," ensuring our high-end copper alloy materials contribute to global industrial upgrading and environmental sustainability.
Our core competitiveness lies in our R&D team, composed of senior industry experts who master international cutting-edge technology. Through industry-university-research collaboration, we have achieved breakthroughs in high-performance tellurium copper and oxygen-free high-conductivity variants.
China's copper processing industry benefits from a complete ecosystem—from smelting to precision machining—reducing lead times by 30-40% compared to Western counterparts.
Sichuan Kepai leverages localized R&D to produce oxygen-free high-conductivity copper that meets international ASTM B187 standards but at a significantly more competitive price point.
Our facility is designed for flexibility. Whether you need a standard C11000 bar or a customized profile, our integrated extrusion and drawing lines allow for fast turnaround on OEM specifications.
Our commitment to quality is backed by comprehensive international standards and internal testing protocols, including metallographic analysis and microcomputer-controlled universal testing.






The copper industry is moving towards Miniaturization and Higher Strength-to-Weight Ratios. While C11000 remains the standard, the market is shifting towards alloys that offer "machinability" without losing conductivity. This is where Kepai's Tellurium Copper (C14500) and Sulfur Copper (C14700) are becoming game-changers, offering 85% machinability compared to standard C11000.
Get in touch with our engineering team for high-precision C11000 copper bars and custom alloy solutions.