Excellent Electrical Insulation
Stable dielectric performance for high-voltage equipment, battery packs and electrical systems.
Grade
G10/FR-4
Color
Yellow/Green/Black
Thickness
0.2–100 mm
Size
1020×1220mm / 1020×2040mm
Density
≥1.85 g/cm³
Strength
≥340 MPa
Flammability
UL94 V-0
Thermal Class
B/F
G10/FR-4 epoxy fiberglass laminate sheet features high mechanical strength, excellent insulation, dimensional stability and flame retardancy. Widely used in electrical insulation, PCB fixtures, precision machinery and electronics industries.
| Items | Parameter |
|---|---|
| Product Name | Epoxy Fiberglass Laminate Sheet |
| Material Grade | G10 / FR-4 / EPGC 202 |
| Standard Colors | Yellow / Aqua Green / Black |
| Thickness Range | 0.2–100 mm |
| Standard Sheet Size | 1020 × 1220 mm / 1020 × 2040 mm |
| Density | ≥ 1.85 g/cm³ |
| Flexural Strength | ≥ 340 MPa |
| Breakdown Voltage | ≥ 35 kV |
| Water Absorption | ≤ 0.20% |
| Flammability | UL 94 V-0 (FR-4) |
| Thermal Class | Class B / Class F |
| Customization | Cutting, drilling, milling, slotting and chamfering |

Stable dielectric performance for high-voltage equipment, battery packs and electrical systems.
Strong flexural and impact resistance for structural supports and precision components.
FR-4 options provide reliable heat resistance and UL 94 V-0 flame-retardant performance.
Available in multiple thicknesses, colors and custom-machined shapes according to drawings.

Custom CNC milling, drilling, slotting, chamfering and profile cutting are available for complex insulation components.

Manufactured from glass cloth and epoxy resin under high temperature and pressure for consistent electrical and mechanical properties.

Thin sheets, standard plates and thick blocks are available for electrical insulation and structural applications.
Epoxy fiberglass laminates are widely used as insulating barriers and structural components in battery systems, switchgear, transformers, test fixtures, industrial equipment and rail transit systems.

Module barriers, busbar supports and high-voltage insulation parts.
Insulating structures for switchgear, transformers and power distribution.
Fixtures, test boards and wear-resistant machined components.
Flame-retardant insulation for onboard power and electrical systems.
In addition to epoxy laminates, our product portfolio covers a broad range of insulation materials and battery pack accessories for simplified sourcing.




Yiant Technologies is a Guangzhou-based supplier serving battery pack manufacturers, electrical equipment companies and industrial customers worldwide. Our portfolio covers insulation paper, adhesive tapes, EVA foam, Mylar, nickel strips, connectors, battery cases, battery indicators and epoxy fiberglass laminates.
Supported by specialized production and converting resources, we provide material selection, die cutting, slitting, CNC machining, sampling and coordinated supply services. Our goal is to help customers simplify sourcing while improving product consistency and project efficiency.

Selected third-party test reports for insulation paper supplied within our product portfolio.




Yes. Samples can be arranged for standard materials. Availability and lead time depend on the selected grade, thickness and machining requirements.
Yes. We support cutting, drilling, milling, slotting, chamfering and custom profiles based on your drawings or samples.
Please provide the material grade, thickness, dimensions, tolerances, quantity and 2D or 3D drawings when available.
Relevant documents can be supplied according to the selected product grade and project requirements.
The minimum order quantity depends on the material grade, thickness, dimensions and machining requirements. Standard sheets and custom parts may have different order quantities.
Lead time depends on material availability, order quantity and processing complexity. A confirmed production schedule will be provided with the quotation.