Explore our industrial-grade enameled wires and custom solutions designed to optimize power density and thermal efficiency.
Polyesterimide (PEI) coated copper wire, commonly classified as Class 180 and Class 200 thermal grade magnet wire, represents one of the most critical structural materials in modern electrical machine design. Formulated through the polymerization of ester and imide bonds, this specialized enamel coating offers high thermal stability, exceptional chemical resistance, and robust mechanical elasticity. Unlike standard polyurethane coatings, Polyesterimide-modified resins retain their structural integrity at elevated temperatures, making them highly suitable for severe operating environments.
In the global drive towards electrification, energy density optimization is the primary benchmark for electrical motors and transformers. Polyesterimide insulation layers provide an optimized thin-film barrier, sustaining voltages up to 220V Class requirements while minimizing the space factor (copper-fill factor). This direct design enhancement enables high torque outputs and smaller mechanical footprints, critical factors for automotive alternators, industrial automation systems, and high-frequency power electronics.
Our factory integrates precision drawing processes, automated continuous annealing, and closed-loop viscosity monitoring during enamel application. The result is a highly uniform coating concentricity, which mitigates insulation breakdown risks at high-stress localized zones.
Suzhou Daiming Electrical Materials Co., Ltd., is a leading manufacturer of high-quality enameled wires, specializing in enameled aluminum wires, enameled copper wires, and enameled copper-clad aluminum wires. Situated on a sprawling 258,333.33 ft² site, our advanced production facility houses 30 state-of-the-art production lines.
This robust infrastructure enables us to maintain a stable, high-volume output, ensuring consistent supply to meet global market demands. With strict quality control at every stage, from raw material inspection to final product testing, we uphold the highest industry standards, guaranteeing the durability and performance of our enameled wires.
Our commitment to material perfection is supported by state-of-the-art laboratory testing and process tracking.
Each roll of enameled wire undergoes rigorous laser-diameter tracking and inline pinhole testing to ensure perfect film concentricity and cross-sectional density.
Our Polyesterimide coatings resist severe thermal shock, maintaining high dielectric properties even under extreme mechanical winding pressure and temperature spikes.
We manufacture custom insulation thicknesses, including specialized flat (rectangular) profiles and continuous transposed configurations (CTC), matching client specs.
Leveraging continuous raw material contracts and high-capacity extrusion infrastructure, we insulate global supply chains from commodity price volatility and shipping bottlenecks.
Engineered for high-efficiency motors, our enameled wires directly contribute to reducing carbon emissions in green energy generation and modern electric vehicles.
Polyesterimide coated copper wire is essential to components across a variety of demanding fields.
In localized industrial hubs—ranging from electric vehicle powertrain factories in Western Europe to heavy power-grid transformer manufacturing plants in North America—our Polyesterimide Coated Copper Wire operates under extreme environmental constraints. In EV traction motors, high-frequency voltage switching (IGBT pulses) generates constant electrical stress, causing partial discharges. Our Class 200 PEI wire, topped with a Polyamide-imide (PAI) overcoat, prevents premature micro-discharges and insulates against high-voltage surges.
For localized wind turbine generator assemblies, copper wires are exposed to corrosive marine moisture and vibrations. The outer ester-imide chains offer exceptional moisture resistance and thermal stability, preventing coil swelling or chemical decomposition. Our custom product lines are designed to perform reliably under these diverse operational and geographical demands.
Our long-term developmental timeline targets high-density electric vehicle (EV) architectures and decarbonized energy storage.
Advancing multi-layer chemical formulations to mitigate high-frequency partial discharge degradation in high-voltage 800V EV traction systems.
Optimizing manufacturing processes to achieve high dimensional precision in rectangular wires, enabling increased slot fill factors for compact e-motors.
Developing eco-friendly enamel formulations derived from renewable resources to reduce VOC emissions during curing, supporting global net-zero initiatives.
Located in Suzhou, an industrial manufacturing hub in China, Suzhou Daiming Electrical Materials Co., Ltd. benefits from a highly integrated supply chain. We maintain close partnerships with high-purity copper refineries to secure stable access to electrolytic copper cathodes. This vertical supply integration minimizes raw material price volatility, allowing us to offer predictable pricing to our global clients.
Our factory runs 30 production lines with intelligent monitoring systems that continuously track heat profiles and extrusion rates. This setup allows for rapid adjustments, ensuring stable quality even during high-volume production runs.
For global logistics, our facility is close to major shipping terminals like the Port of Shanghai. This allows for fast domestic transport and convenient ocean and air freight routing. We handle customs documentation and compliance paperwork to facilitate smooth transit into international markets.
We maintain global compliance certifications to satisfy strict import requirements and environmental standards across North America, Europe, and the Asia-Pacific region.
Stay informed with the latest updates from Suzhou Daiming, including technology advancements and shipping schedules.
With high commodity prices impacting manufacturing budgets, our enameled aluminum wire offers an alternative that matches the conductivity and weight specs of modern applications.
Our Copper-Clad Aluminum (CCA) enameled wire provides a reliable option that balances performance and cost, helping clients stabilize margins during market shifts.
We completed a shipment of custom CTC (Continuously Transposed Conductors) to support high-voltage power transformer upgrades in Turkey, expanding our reach in the Eurasian grid sector.
Get quick, direct answers regarding the technical specifications, application limits, and factory processes of our enameled wires.
Compare additional technical wire configurations, including Class 180, 200, and 220 enameled options.
