Direct factory supply featuring high-purity T1/T2 electrolytic copper conductors, custom stranding pitches, and advanced termination options.
Pioneering Mechanical Automation, Metallurgical Excellence, and Flexible Electrical Transmission Technology from Liushi—the Electrical Capital of China.
Established in 2019, Zhejiang Xingma Copper Industry Co., Ltd. stands as a premier specialized manufacturer dedicated to high-precision metal products, non-ferrous wire drawing, strand bunching, and customized copper soft connections. Located in Liushi, Wenzhou—the globally renowned hub for electrical appliance manufacturing—Xingma operates out of an expansive industrial complex spanning over 10,000 square meters of facility area with a workshop floor exceeding 5,000 square meters.
Our operational philosophy centers around continuous scientific innovation, rigorous quality management, and mass mechanical automation. By integrating state-of-the-art Dingtian wire drawing, Fuchuan high-speed beamers, and automated spot-welding networks, we deliver high-performance copper wire, tinned/bare braided tape, soft stranded copper connectors, brush/carbon brush wires, and precision stamping components to clients across North America, Europe, the Middle East, and East Asia.
High-purity raw materials combined with controlled multi-pass drawing and continuous protective annealing guarantee superior electrical conductivity and mechanical flex life.
We exclusively utilize T1/T2 Grade Electrolytic Tough Pitch (ETP) Copper with copper purity exceeding 99.90% to 99.95%. This minimizes electrical resistance and prevents embrittlement during high-flex mechanical cycles.
Using Fuchuan beamers and pipe twisting machines, we achieve exceptionally uniform strand distribution. Strand pitch ratios (lay lengths) are tightly controlled between 8× and 14× strand outer diameter to optimize flexural fatigue life.
Controlled-atmosphere nitrogen annealing eliminates surface oxidation while controlling tensile strength (200-240 MPa) and elongation (≥ 25%). Electro-tinned variants feature uniform coating thicknesses (3-15 μm) for severe anti-corrosion applications.
| Parameter / Metric | Bare Copper Strands (T2) | Tinned Stranded Copper | Silver-Plated Copper Strands | Testing Standard |
|---|---|---|---|---|
| Raw Material Purity | ≥ 99.90% Cu | ≥ 99.90% Cu Core + Sn Cladding | ≥ 99.95% Cu Core + Ag Cladding | GB/T 467 / ASTM B115 |
| Electrical Conductivity | ≥ 100% IACS | ≥ 96% - 98% IACS | ≥ 102% - 104% IACS | IEC 60468 / ASTM B193 |
| Operating Temperature | -40°C to +150°C | -50°C to +200°C | -65°C to +300°C | UL 758 Thermal Profiling |
| Flex Fatigue Resistance | High (> 500,000 cycles) | High (> 450,000 cycles) | Ultra-High (> 1,000,000 cycles) | Custom Dynamic Flex Test |
| Corrosion & Oxidation | Standard Atmospheric | Excellent Acid/Salt Spray | Superior High-Temp Oxidation | ASTM B117 Salt Fog |
Our facility houses over 300 modern machinery units, creating a fully integrated production loop from raw copper rod reduction to final welded terminal assemblies.
Quality control is embedded into every operational step. Certified under ISO 9001:2020 (Quality Management) and ISO 14001:2020 (Environmental Management), Xingma utilizes precision testing equipment:
From electric vehicle powerpacks to heavy industrial switchgear, our customized copper components provide low-impedance electrical interconnects under extreme conditions.
High-flexibility battery module interconnects, inverter grounding shunts, dynamic charging cable conductors, and engine vibration isolation copper braids engineered to withstand severe shock and thermal cycling.
Flexible expansion joints for high-voltage circuit breakers, transformer soft busbars, disconnector switches, and generator leads where mechanical expansion and thermal contraction must be compensated without joint fatigue.
Heavy-current flexible copper jumpers connecting lithium battery racks in containerized BESS installations, solar central inverter grounding tapes, and wind turbine pitch control copper soft connections.
Low-impedance grounding braids and flat tinned tapes designed for high-frequency EMI shielding, server rack ground busbars, and lightning surge protection pathways in 5G base stations.
High-flex carbon brush wires, ultra-fine copper brush strands, shunt connectors for DC electric motors, mining machinery electrical flexes, and heavy industrial welding equipment leads.
Traction motor flexible leads, pantograph copper braid connectors, and specialized airborne grounding straps manufactured under rigid aerospace vibration tolerance parameters.
Looking toward the future of power transmission, Xingma continues investing in advanced material alloys, dynamic simulation, and zero-emission processing lines.
To address operating temperatures above 250°C in next-generation electric vehicle motors and aerospace equipment, our R&D roadmap introduces trace silver (0.1% Ag) micro-alloying. This increases the softening (recrystallization) temperature of drawn copper strands while retaining over 98% IACS conductivity.
Advancing past traditional 0.07-0.10 mm strands, our automated ultra-fine braiding looms are engineered to bundle 0.025 mm to 0.04 mm single copper filaments. This yields unparalleled flexibility for robotic joint wiring and wearable medical equipment leads.
Transitioning away from conventional tin soldering, Xingma is scaling solid-state molecular diffusion press-welding. By applying high heat and hydraulic force without filler metal, stranded copper ends are converted into solid copper contact blocks, reducing joint contact resistance by up to 35%.
Integrating IoT sensor networks across our Dingtian wire drawing and Fuchuan twisting units allows real-time measurement of strand tension, pitch variation, and inline outer diameter optical monitoring, guaranteeing zero-defect batches.
Engineered for seamless international procurement, our copper processing meets and exceeds global electrical standards.
Full compliance with international standards for flexible conductor stranding and electrical resistance limits.
Conforming to North American standards for electrical conductors utilized in flexible industrial cables.
100% free of hazardous substances, heavy metals, or banned chemical additives, fully certified for EU entry.
As an active member of the Zhejiang Cable Accessories Industry Association and the China Forging Association, Zhejiang Xingma Copper Industry has been awarded Star Enterprise status for excellence in production control, ethical labor practices, and sustainable environmental compliance.
From initial Design for Manufacturability (DFM) analysis to rapid prototyping and mass volume delivery, we support international engineering teams.
Our engineering team reviews your technical drawings (STEP, DWG, PDF), analyzing strand lay pitch, terminal lug dimensions, and current carrying capacity requirements.
Utilizing dedicated tooling setups, sample prototypes of custom braided connections or stranded wires are fabricated and dispatched within 3 to 7 working days.
Upon sample approval, high-speed automated machine lines scale production up to 2,000+ tons annually with inline dimensional and conductivity checks.
Desiccant-shielded, vacuum-sealed, and wooden case export packing dispatched via nearby Shanghai or Ningbo deep-water ports under FOB, CIF, or DDP terms.
Technical insights and purchasing guidance for procurement managers and design engineers.
Bare copper strands offer maximum theoretical electrical conductivity (100% IACS) and cost advantages for non-corrosive indoor environments. Tinned copper strands are coated with a thin layer of tin (3-15 μm), which protects the underlying copper from oxidation, sulfide corrosion, and atmospheric exposure, extending component life in humid, marine, or high-temperature industrial settings up to 200°C.
Conductor flexibility is inversely proportional to individual strand diameter. For a given total cross-sectional area (e.g., 25 mm²), bundling hundreds of ultra-fine strands (e.g., 0.10 mm diameter) yields significantly higher dynamic flexibility and vibration endurance than using fewer, thicker strands (e.g., 0.50 mm diameter). Fine stranding also reduces skin-effect resistance at elevated AC frequencies.
We provide comprehensive termination methods, including molecular press-diffusion welding (solid end blocks without flux), ultrasonic cold welding, heavy hydraulic crimping with seamless tinned copper lugs, silver soldering/brazing, and insulated heat-shrink tubings (PVC, Polyolefin, or Silicone).
Every production lot is accompanied by a comprehensive Quality Inspection Certificate, including Material Test Reports (MTR) confirming chemical purity, electrical conductivity test reports (IACS %), micro-ohm resistance measurements, tensile/elongation test data, and RoHS/REACH compliance documentation.
Factory-direct OEM manufacturing backed by 300+ advanced machines and Liushi supply chain efficiency.
Xingma
