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High-Performance NEMA Grade FR4 Machined Components FR4 (Flame Retardant 4) Green Epoxy Glass Cloth Laminate is the industry standard for high-reliability electrical and mechanical insulation. At Wuxi Shangjue Technology, we don’t just supply raw materials—we specialize in precision CNC machining and custom cutting services to turn high-grade FR4 into complex, ready-to-install industrial components tailored exactly to your CAD drawings.

Material: NEMA Grade FR4 / G10 / 3240 Epoxy Glass Fiber
Color: Characteristic Pale Green (Black and Yellow available)
Key Services: CNC Milling, Routing, Lathe Turning, Drilling, and Precision Cutting.
Application: Ideal for High-Voltage and Critical Mechanical Environments.

2.Our Advanced Machining Services

Whether your project requires ultra-thin intricately routed profiles or heavy-duty, thick-gauge milled blocks, our state-of-the-art CNC equipment guarantees tight tolerances and zero delamination.

Our Full-Scale Fabrication Capabilities Include:

Precision CNC Milling & Routing: Perfect for structural insulation panels, step-blocks, and complex geometric shapes.

Custom Cutting & Shearing: Clean-cut edges for strips, spacers, and custom-sized rectangular backing plates.

High-Speed Drilling & Tapping: Accurate hole patterns and threaded components for fasteners and insulators.

3D CNC Lathe Turning: Specialized processing for custom FR4 rods, tubes, spools, and flanges.

- 3.Key Technical Features of Our FR4 Parts
- Exceptional Dielectric & Insulation Properties: Engineered to effectively block electrical currents in high-voltage environments, preventing short circuits and ensuring operational safety.
- Robust Mechanical Strength: High flexural, tensile, and impact strength allows our machined parts to withstand heavy structural loads, vibrations, and mechanical stress without cracking.
- Excellent Heat & Thermal Resistance: Maintains structural integrity and electrical properties under elevated operating temperatures, preventing material aging and thermal deformation.
- Superior Chemical & Moisture Resistance: Resists degradation from chemical fumes, oils, acids, alkalis, and outdoor moisture/salt fog, ensuring a long industrial lifespan.
- Outstanding Flame Retardancy (UL94 V-0): Self-extinguishing material that conforms to strict safety regulations, effectively preventing the spread of fire.

4.Target Applications & Industries

Our custom-machined green FR4 insulation components are vital assets across multiple high-tech sectors:
- Power & Electrical Utilities: Generator stator slot insulation, transformer spacers, terminal boards, substation busbar supports, and high-voltage switchgear arc shields.
- Automotive & EV Industry: Cell-to-cell insulation barriers in Electric Vehicle (EV) battery packs, battery management systems (BMS), and onboard charging infrastructure.
- Electronics & Semiconductor Manufacturing: Custom PCB test fixtures, IC test jigs, component support plates, and insulating backing boards for high-frequency signal processing.
- Aerospace & Defense Electronics: Light-weight, high-strength aerospace grade insulation parts capable of enduring extreme vibrations and thermal shocks.
- Home Appliances: Heavy-duty insulation dividers, motor brackets, and safety barriers for refrigerators, washing machines, and industrial microwaves.

5.Why Choose Wuxi Shangjue Technology?)

As an established leader in industrial insulation fabrication, Wuxi Shangjue Technology combines years of practical expertise with top-tier automated machinery (including high-precision large CNC lathes, laser cutters, and 3D molding equipment).

We provide comprehensive OEM/ODM capabilities, collaborating directly with your engineering team from design verification to mass production, delivering high-value solutions that reduce your procurement costs without sacrificing quality.