A Comprehensive Overview of Guangdong Xinyuan Hengye's ACMCC Conductor: Development and Market Advantages

As a national high-tech enterprise, Guangdong Xinyuan Hengye Power Line Equipment Co., Ltd. has adhered unwaveringly to the development vision of "Technological Innovation, Quality First" since its establishment in 2001. With over two decades of dedicated expertise in the power line equipment sector, the company has emerged as a global leader in Aluminum Conductor Multi-strand Carbon fiber Core(ACMCC) through its unique full-industry-chain layout, internationally advanced core technologies, and superior product performance. We provide high-quality, energy-efficient, and cost-effective solutions for global power grid construction, perfectly aligning with the "dual carbon" goals and global energy transition trends. Xinyuan Hengye is the preferred partner for power grid enterprises, electrical engineering firms, and overseas cooperation clients worldwide.

I. Full-Industry-Chain Layout + Authoritative Certifications: Fortifying the Foundation of Trust

Xinyuan Hengye stands as China's sole integrated supplier covering the entire industrial chain of stranded carbon fiber composite cores, conductors, and fittings. From core material R&D and product manufacturing to matching fitting adaptation, we achieve full-process independent control. This not only ensures the stability and consistency of product quality but also enables rapid response to customized customer needs, providing one-stop technical and service support. Our core qualifications and certifications underpin every partnership:

• Intellectual Property: We hold 30 invention patents in China and the United States, with exclusive "ACMCC" trademark registrations for stranded composite core conductors in the EU, USA, India, Indonesia, and other countries. Additionally, we possess 2 software copyrights for conductor design and installation, and actively participate in formulating numerous national and industrial standards, leading industry normalization through technological discourse power.

• Authoritative Testing: Our products have successfully passed inspections by renowned domestic and international institutions, including China Electric Power Research Institute, Shanghai National Cable Testing Center, Germany's SPIR Laboratory, Hungary's VEIKI-VNL Laboratory, and Guangzhou Aging Test Institute. All performance indicators fully comply with international, national, industrial, and enterprise standards, with quality validated by the rigorous demands of global markets.

• Technical Authentication: Between 2012 and 2025, our products have undergone 5 technical authentications by authoritative bodies such as China Electricity Council, Chinese Society for Electrical Engineering, and the Ministry of Industry and Information Technology. Consistent authentication conclusions confirm: "Key technical challenges of stranded composite core conductors have been overcome, breaking foreign production monopolies and filling domestic and international gaps. The overall technology reaches an internationally advanced level, with fitting crimping technology achieving world-leading standards" — a testament to our industry-recognized technical strength.

II. A Decade of Technological Breakthroughs: Forging Core Competitiveness

Xinyuan Hengye's R&D journey in stranded carbon fiber technology exemplifies independent innovation in China's high-end manufacturing sector. Since initiating technological breakthroughs in 2011, the company has achieved leapfrog development from technology introduction to independent leadership:

• March 2011: Collaborated with China Southern Power Grid Electric Power Research Institute, Tokyo Systems Corporation, and other institutions to conduct research on "carbon fiber strand wires and supporting accessories," laying a solid foundation for subsequent technological advancements.
• 2013: Embarked on independent R&D, focusing intensively on carbon fiber stranding technology.
• 2015: Achieved critical technological breakthroughs by producing fully domestically manufactured 7-core carbon fiber stranded cores using domestic equipment, technology, and materials — breaking foreign monopolies and realizing localization of core technologies.
• 2016: Technical achievements were authenticated by experts from the Chinese Society for Electrical Engineering. The same year, we designed and manufactured production and curing equipment for 19-strand carbon fiber cores, completed in 2017. Products passed inspections by the National Quality Supervision and Inspection Center for Wire and Cable, recognized as "filling domestic and international gaps, with Aluminum Conductor Multi-strand Carbon fiber Core and supporting crimping accessories being world-first innovations."
• 2018: Continued pursuing excellence by designing and manufacturing key equipment for 61-core production, alongside corresponding production processes and tooling. By year-end, we successfully developed 37-core and 61-core stranded carbon fiber composite cores, conductors, and supporting accessories, forming a complete product series. This achievement positioned us at the global pinnacle of the industry, establishing insurmountable technological barriers.

III. Dual Breakthroughs in Structure and Performance: Redefining Transmission Conductor Benchmarks

As our flagship product, stranded carbon fiber composite core overhead conductors (ACMCC) represent the highest standard in current transmission conductor technology. Their advantages stem from dual innovations in structural design and material performance, perfectly addressing key pain points of traditional conductors.

(I) Innovative Structural Design: Solving Industry Pain Points

Adopting "multi-strand winding stress dispersion" technology, the product consists of 7, 19, 37, or 61 single carbon fiber strands, forming stranded carbon fiber composite cores with cross-sectional areas ranging from 20~1000mm². This completely breaks the 95mm² maximum area limitation of traditional rod-type carbon cores, providing a new type of energy-saving high-temperature low-sag conductor (eHTLS) for ultra-long span lines. It effectively eliminates conductor damage caused by stress concentration during construction. Additionally, the carbon core integrates optical fibers, which, combined with an Optical Time Domain Reflectometer (OTDR), enables real-time monitoring and traceability throughout the conductor's production, transportation, and construction processes. In the event of conductor damage, the system can accurately locate the damage position, determine the damage time, and trace the cause — realizing full-lifecycle intelligent management.

(II) Superior Core Performance: Leading Industry Standards

Our product's core performance parameters lead the industry, demonstrating exceptional application adaptability:

• Tensile strength of the stranded carbon fiber composite core reaches 3000MPa.
• Coefficient of linear expansion as low as 1.0×10⁻⁶/℃ (with measured values occasionally negative).
• Nominal elastic modulus of 125GPa or higher.
• Full carbon fiber structure with a specific gravity of only 1.6g/cm³ — the lightest among all composite carbon core types.
• Excellent bending performance: passes 30~40D winding tests, withstands 3×360° and "forward + reverse" 1×360° torsion tests, and resists lateral pressure of 30kN.
• Outstanding high-temperature resistance: glass transition temperature Tg (DMA) of 240℃ or higher, with long-term service temperature up to 200℃.
• Strong corrosion resistance: maintains stable mechanical and physical properties after 7-day immersion in 30% nitric acid solution and 365-day immersion in seawater.

Overall, the product offers multiple advantages including excellent flexibility, high strength, light weight, corrosion resistance, high-temperature resistance, low sag, non-magnetism, low power loss, and ease of construction and installation. Compared to traditional steel-cored aluminum conductors, it delivers significantly enhanced adaptability and reliability under complex operating conditions.

(III) Matching Fitting Adaptation: Ensuring Line Safety

To maximize conductor performance, we have simultaneously developed specialized supporting fittings, forming a complete solution:

• The stranded carbon fiber composite core adopts a crimp-type tension clamp structure. The tension clamp wraps the surface of the stranded core, forming a threaded contact surface that enhances grip while reducing the risk of crimping damage and stress concentration on the composite core.
• The crimped joints of tension clamps and intermediate splicing sleeves are dense and waterproof, avoiding "ice explosion" caused by rust and water accumulation inside the sleeves. This ensures long-term safe operation of lines under various complex conditions such as icy and snowy weather.

IV. Dual Economic and Environmental Value: Aligning with "Dual Carbon" Trends

Xinyuan Hengye's stranded carbon fiber composite core conductors not only achieve technological breakthroughs but also deliver significant economic and environmental benefits, making them the preferred choice for balancing short-term efficiency and long-term development.

(I) Significant Economic Value: Attractive Investment Returns

• Under the same loss conditions, the transmission capacity of stranded carbon fiber composite core conductors is approximately 80% higher than that of steel-cored aluminum conductors. At the maximum operating temperature (180℃), their capacity is 2~3 times that of steel-cored aluminum conductors (70℃).
• Based on the same loss calculation, their maximum transmission capacity is 2.35 times that of steel-cored aluminum conductors, with an additional transmitted power of 1792MW — enabling one line to deliver the efficiency of two lines, significantly reducing land occupation and initial investment in line construction.

Case Study 1: For a 100km, 500kV line:

• Although the initial investment in stranded carbon fiber composite core conductors is higher, annual line loss savings reach RMB 33.92 million, offsetting the additional investment in approximately 15 months.
• Over a 30-year lifecycle, total electricity cost savings amount to RMB 1.017 billion.
• For the same current load, tower material usage can be reduced by over 5~10%, saving 10% of tower costs and land area for a 100km line (approximately RMB 3 million in savings).

Case Study 2: Jiangsu Fengcheng-Meili 500kV Yangtze River Ultra-Long Span Project (simulated replacement plan):

• Replacing the original extra-high strength steel-cored high-strength aluminum conductor with stranded carbon fiber heat-resistant aluminum conductor reduced the tower height from 255.578m to 156.375m (a reduction of 99.2m), significantly lowering tower construction costs and land occupation.
• Power loss was reduced by up to 26.32%, and transmission capacity increased by up to 65.0%, reserving sufficient space for future line capacity expansion.
• Total cost savings exceeded RMB 200 million.

Additionally, the product demonstrates strong profitability with an average gross profit margin of 40%. The company plans to expand production scale, optimize production lines, enhance product quality and R&D speed, and strive to achieve a production value growth of over 30% in the short term — providing stable and reliable supply chain support for cooperative clients.

(II) Outstanding Environmental Contributions: Supporting "Dual Carbon" Goals

Amid global energy transition and "dual carbon" commitments, the energy-saving and environmental advantages of stranded carbon fiber composite core conductors are particularly significant. Statistics show that over a 30-year period, a 100km line using our conductors reduces emissions compared to steel-cored aluminum conductors:

• 553,492.8 tons of carbon dust
• 2,028,795.3 tons of carbon dioxide
• 61,047 tons of sulfur dioxide
• 30,523.5 tons of nitrogen oxides

This equates to saving 0.4kg of standard coal, reducing 0.272kg of carbon dust, 0.997kg of carbon dioxide, 0.03kg of sulfur dioxide, and 0.015kg of nitrogen oxides per kilowatt-hour of electricity saved — providing practical technical support for the green and low-carbon development of the power industry.

V. Wide Domestic and International Application: Proven Strength Through Cooperation Cases

With superior product performance and a comprehensive service system, Xinyuan Hengye's stranded carbon fiber composite core conductors have been successfully applied in numerous major domestic and international projects, covering 110~500kV voltage levels with a total installed length exceeding 3000km. These applications fully validate their reliability and adaptability under various complex environments.

Domestic Market

Our products serve diverse application scenarios, including:

• Modern national defense long-wave antennas
• China Southern Power Grid 500kV EHV lines
• Key Daya Bay Nuclear Power transmission lines to Hong Kong
• China's first 1000kV AC UHV pilot project (Shanxi-Nanyang-Jingmen section), where Xinyuan Hengye acted as a major supplier of conductors and power fittings, demonstrating our technical strength in the UHV sector.

Extreme Climate Performance:

• Hainan Power Grid Fufeng Line I, commissioned in 2013, has withstood multiple typhoons, including the Category 17 super typhoon "Rammasun" in 2014. While other lines suffered widespread tripping and tower collapses, this line remained operational without any abnormalities post-typhoon.
• 2022: Participated in a 100km national defense antenna project with a maximum span of 3300m and maximum ice thickness of 50mm. Using 37-strand 330mm² stranded carbon fiber composite cores, the project achieved a thousands-of-kilometers increase in antenna transmission distance through superior sag performance, making significant contributions to national defense.

International Market

Our products have successfully broken through technical barriers and been applied in over 30 major international projects, including:

• Indonesian cross-sea lines
• Polish heavy ice region lines
• Supporting "Belt and Road" national power grid construction

We achieved the world's first application of carbon fiber composite core conductors in a 3300m ultra-long span line project, fully demonstrating product adaptability in complex engineering scenarios.

Key Clients:Domestically, our clients include State Grid Corporation of China, China Southern Power Grid, their subsidiaries, independent provincial power companies, Power Construction Corporation of China, and China Energy Engineering Corporation. Among over 200 domestic power fitting manufacturers holding production licenses, Xinyuan Hengye is one of the few capable of producing full-voltage-level power fittings and one of only 11 qualified to manufacture 1000kV UHV power transmission and transformation fittings — reflecting significant market recognition and industry status.

VI. Broad Prospects: Joining Hands for a Green Energy Future

Against the backdrop of accelerated global energy transition and deepened "dual carbon" goals, stranded carbon fiber composite core overhead conductors — which meet mechanical performance requirements while offering low operational costs — are poised to become the mainstream choice in future power transmission. By deeply integrating the "Belt and Road" Initiative, new material industry development, and energy-saving and environmental protection concepts, Xinyuan Hengye is well-positioned for explosive growth over the next five years, leveraging its outstanding enterprise qualifications, full-industry-chain advantages, and stable domestic and international market position.

Our carbon fiber cable technology has been recognized by authoritative experts from State Grid and China Southern Power Grid as internationally advanced, with enormous development potential. Looking ahead, Xinyuan Hengye will continue to focus on technological innovation, optimize product performance, and expand production scale. We are committed to deepening cooperation with global power grid enterprises, electrical engineering firms, and overseas partners through higher-quality products and more comprehensive services, jointly promoting the sustainable development of the power industry and contributing Chinese strength to global energy transition and the achievement of "dual carbon" goals.