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Ei/Aiw Copper Wire. Broad Size Range: Available in diameters from 0.05mm to 3.20mm (SWG9-SWG47). Durable Construction: Features excellent resistance to abrasion and solvents for longevity. Global Certifications: Certified under ISO9001, RoHS, UL, IEC, JIS, DIN, and NEMA standards. High Production Capacity: Annual output reaches 100,000 metric tons to ensure supply stability. OEM/ODM Services: Custom manufacturing services available with 12 dedicated R&D engineers. Versatile Applications: Ideal for B class motors, appliances, instruments, and coil windings. Solid Copper Conductor: Made with high-purity copper for superior electrical conductivity.