Premium quality insulated conductors, manufactured to meet extreme mechanical, thermal, and electrical performance standards.
Understanding the engineering metrics and chemical advantages of Polyurethane (UEW) insulation.
Polyurethane coated round wire (classified internationally as UEW) is coated with a high-durability polymer resin synthesized from polyurethane compounds. The defining feature of UEW is its direct solderability (self-soldering property). Unlike traditional polyester or polyester-imide coatings that require chemical stripping or mechanical scraping of the insulation layer prior to termination, polyurethane coatings decompose thermally at temperatures ranging from 360°C to 475°C. During the soldering process, the coating turns into a clean, flux-like protective layer, allowing the underlying copper or aluminum wire to fuse directly and cleanly with the solder alloy. This cuts assembly time by up to 40% and eliminates stress points on microscopic wire sizes.
Available in Thermal Classes 130 (Class B), 155 (Class F), and 180 (Class H), maintaining excellent dielectric integrity under high operational heat loads.
Exceeds IEC 60317 and NEMA MW 79/82 parameters. Resists pinholes and high-frequency corona discharge in power-conversion transformers.
Maintains coating integrity with excellent elongation properties and high mechanical flexibility, ideal for high-speed automatic winding systems.
Customer Needs as Our Core Focus. Located in a highly specialized electronics manufacturing hub, Suzhou Daiming Electrical Materials Co., Ltd. is a premium developer of elite-level enameled wires, including Enameled Aluminum Wire, Enameled Copper Wire, and Copper-Clad Aluminum Enameled Wire (ECCA).
Situated on a sprawling 258,333.33 sq. ft. modern facility, we house 30 state-of-the-art production lines equipped with real-time laser sizing diagnostics, automated tension adjustments, and thermal ovens configured for maximum enamel bonding uniformity. Our engineering team brings over a decade of deep domain expertise to international procurement, tailoring compliance profiles to clients in over 10 countries across North America, Europe, and Asia.
Engineering enameled wires with precise characteristics to optimize power generation and electrical efficiency.
Each roll of enameled wire undergoes rigorous concentricity testing to ensure stable and even insulation thickness along the entire length.
Engineered for high resistance to thermoplastic flow, mechanical scraping, and scratch deformation under extreme winding tension.
Precisely matched custom specifications spanning ultra-fine round cross-sections to flat rectangular wire for high-density slot fills.
Our raw material contracts and large-scale facilities shield customers from volatile supply crunches, ensuring on-time project delivery.
How Daiming Electrical is driving technical innovation and insulation systems forward.
As electric vehicles transition from 400V architecture to high-efficiency 800V drive systems, magnet wires encounter intensified partial discharge voltages and higher temperatures. Daiming is developing advanced hybrid enamel systems combining polyurethane bases with polyamide-imide (PAI) and polyimide (PI) topcoats. This increases the Corona Inception Voltage (CIV) and extends operational life under high-frequency pulse-width modulated (PWM) inverter waveforms.
High-frequency electronics require increasingly thin conductors to mitigate the skin and proximity effects. Our manufacturing lines are equipped to draw and enamel ultra-fine wire diameters. The self-soldering properties of our polyurethane coatings prevent thin conductors from breaking during termination, ensuring clean joints in compact electronics.
As global regulations restrict VOC emissions, our R&D team is focused on water-soluble polyurethane enamels and high-solid low-emission formulations. We are also upgrading our facilities with energy-efficient thermal oxidizers that capture and recycle the combustion energy of evaporated solvents back into the curing process.
Supplying critical industries with high-performance enameled conductors designed for maximum reliability.
Combining automation, precision quality control, and robust global logistics to deliver reliability.
How Daiming protects your supply chain from quality deviations and shipping delays:
Every extrusion and enameling line features laser micrometers that check outer diameters in real-time, preventing thickness deviations across thousands of meters.
Using smart raw material hedging practices, we buffer global buyers against commodity market shocks, keeping project quotes highly stable.
From chemical formulations to final shipping packaging, each batch receives a tracking code, ensuring complete traceability and performance data visibility.
Stay updated on market movements, engineering developments, and technical milestones.
Every spool of wire we manufacture meets high standards for structural and electrical performance.
Our lines run in accordance with strict ISO 9001 and IATF 16949 processes. High-voltage insulation reliability is verified through ongoing pinhole testing, elongation checks, and dielectric breakdowns.
We package spools using heavy-duty plastic carriers, secure carton enclosures, and heat-treated wooden pallets. This keeps wires perfectly clean and protects them from vibration damage during sea shipping.
Our technical team works with buyers to match operational profiles, adjusting parameters like thermal limits, lubrication levels, and enamel thickness (Grade 1, 2, or 3) for specific winding needs.
Answers to common technical, logistics, and material questions from sourcing directors and electrical engineers.
High-reliability enameled wire designs for extreme mechanical environments and high-efficiency electrical layouts.
