1. Decoding custom wire harnesses: more than just "connecting wires", but also technology-intensive core components. Custom wire harnesses are electrical connection solutions tailored to the needs of specific equipment or systems. The core consists of wires, cables, connectors, terminals and protective materials. The core function is to achieve precise power transmission and signal distribution, and is widely used in key areas such as automobiles, industrial equipment, consumer electronics and new energy systems. Its core competitiveness is not simply "assembly and splicing", but focuses on the two dimensions of structural design and process realization: from the optimization of cable layout, the innovation of connection methods to the upgrade of protection design, every link directly affects product performance. Key technologies focus on electrical performance stability, anti-interference ability, environmental resistance and assembly consistency. Among them, electromagnetic compatibility (EMC) design can effectively resist signal interference, and high-temperature-resistant insulation technology can adapt to extreme working conditions. These two technologies are the core barriers of high-end products and have become the key to differentiated competition among enterprises. 2. Panoramic view of the industrial chain: Upstream and downstream are working together, and application demand has exploded at multiple points. The industrial chain of the customized wire harness industry has a clear division of labor, and the upstream and downstream synergies are significant, forming a complete ecosystem from raw material supply to terminal applications. 1. Upstream: The technology is mature but cost-sensitive, and copper price is a key variable. The upstream is mainly composed of suppliers of copper materials, wires and cables, connectors, insulation materials and processing equipment. The overall technology of the industry is mature, but there are still obvious technical barriers in the fields of high reliability and high-end connectors. It is worth noting that copper accounts for as much as 65%-80% of the raw material cost of wire harnesses. This characteristic causes industry costs to be greatly affected by upstream price fluctuations - in 2025, the domestic spot copper price has exceeded 80,000 yuan/ton, putting considerable pressure on corporate cost control. 2. Downstream: Automobiles lead the way, and energy storage + industrial automation has become a new growth pole. Among downstream application scenarios, automobile manufacturing is undoubtedly the largest market. With the rapid development of electric vehicles and smart vehicles, the demand for high-voltage wire harnesses and complex wire harnesses has surged. The liquid-cooled wire harness jointly developed by CATL and Aptiv has been applied on a large scale and has become an industry benchmark. At the same time, the 800V high-voltage wiring harness has become the core demand of new energy car companies with its adaptability of "charging for 10 minutes and driving range of 400 kilometers". Related products from Suzhou Kaibaile, Sumitomo Electric and other companies have been widely used in BYD, NIO and other brands. In addition to the automotive field, industrial automation equipment and energy storage systems have become important sources of growth. Among them, the value of a dedicated wire harness bicycle for energy storage power stations has exceeded 10,000 yuan. The high current-carrying, strong protection energy storage connection line launched by Deso Precision Industry and other companies is designed with high-purity oxygen-free copper conductors and multi-layer insulation structures to meet the needs of all scenarios such as household, industrial and commercial, and grid level. The core demands of downstream customers focus on reliability, durability and customization capabilities. Large customers pay more attention to quality system certifications such as IATF16949 and batch delivery capabilities. As a global standard in the automotive industry, this certification has become a "stepping stone" for enterprises to enter the mainstream supply chain through strict process control and defect prevention requirements. 3. Three major development trends + core drivers: The industry is accelerating iteration toward high-end and intelligence. The custom wire harness industry is currently undergoing profound changes. High voltage, lightweight, and integration have become the three core development trends, and it is gradually iterating toward high-voltage platforms, modular design, and intelligence. 1. Technological innovation breaks through production bottlenecks. The application of automated production and digital design tools continues to improve manufacturing efficiency. However, the current automation penetration rate in the wire harness industry is still less than 30%. New technologies such as AI visual guidance and digital twins are gradually breaking through the bottleneck of flexible production, helping companies improve production consistency and efficiency while meeting customized needs. For example, Aptiv uses its "wire harness + electronics + software" integration capabilities to control the smart cockpit wire harness signal delay to the microsecond level and adapt to the domain-centralized electronic and electrical architecture. 2. Core Growth Drivers Clarify that the core drivers of industry growth include three major aspects: First, the electrification and intelligent upgrading of automobiles, driving demand for high-voltage wiring harnesses, automotive Ethernet wiring harnesses and other products, such as BMW iX and NIO ET7 The in-vehicle Ethernet wire harnesses installed in other models have a transmission rate of 10Gbps-100Gbps, meeting the needs of autonomous driving and smart cockpits. Secondly, with the advancement of industrial automation, the reliability requirements for customized wire harnesses for complex equipment continue to increase. Thirdly, with the expansion of the new energy industry, the demand for wire harnesses in areas such as energy storage and charging piles has grown rapidly. At the same time, the increasing complexity of equipment has further promoted the growth in demand for customized wire harnesses, becoming an important support for the sustainable development of the industry. 4. Opportunities and challenges coexist: Industry profits are differentiated, and leading companies are the first to break through 1. Industry development faces multiple obstacles Despite broad growth prospects, the custom wire harness industry still faces multiple challenges: In addition to fluctuations in copper prices, labor costs are rising significantly - industry labor costs will increase by 45% in 2025 compared with 2020; the contradiction between customized production and large-scale efficiency is prominent, leading to insufficient utilization of production capacity by some companies; fierce industry competition brings price pressure, and the risk of rework and recall caused by quality problems cannot be ignored. 2. Profits are clearly differentiated. The gross profit margins of leading companies that lead the industry are at a medium level of 20%-40%, showing a clear differentiation trend: automotive and high-end industrial wiring harnesses have relatively high gross profit margins, of which 800V high-voltage wiring harnesses can reach 22%-28%; while standardized and low-end products have low gross profit margins, some even lower than 15%. Faced with industry pain points, leading companies have taken the lead in exploring ways to break through: improving profitability by improving automation levels and optimizing value-added design; Luxshare Precision and other companies have adopted futures hedging strategies to effectively hedge the risk of raw material price fluctuations; Leoni, Fujikura and other companies have introduced aluminum core high-voltage wire harnesses through material innovation, which is 50% lighter than copper core products, while improving current carrying capacity to further enhance product competitiveness.
