Blog - JingHong

Industry standards

The Complete Guide to FR4 Sheet in 2025

James Yang

Jun 5, 2025

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Market Analysis

The Development History of Insulating Materials

The journey of insulating materials stretches back centuries, evolving from rudimentary natural substances to sophisticated, high-performance solutions that power modern industries. This fascinating progression began with early civilizations harnessing materials like wood, straw, and animal hides to shield against environmental extremes. As scientific understanding deepened, the Industrial Revolution ushered in a wave of innovation, introducing substances like rubber and early ceramics to meet burgeoning electrical demands. The 20th century marked a pivotal era, with synthetic polymers and advanced composites revolutionizing insulation technology. Today, cutting-edge insulating materials, such as aerogels and nanotechnology-enhanced sheets, dominate global markets, catering to diverse sectors from energy to aerospace. This rich history underscores the relentless pursuit of efficiency, safety, and sustainability in insulation advancements.

James Yang

Jun 12, 2025

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Glass Fiber Series

What's the Difference between G10 and FR4?

James Yang

Jun 17, 2025

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Phenolic Series

Can CE Phenolic Sheet Meet Electrical Insulation Needs in Global Equipment Production?

Caroline Jia

Oct 15, 2026

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Phenolic Series

Phenolic Cotton Tube Helps Manufacturers Produce Durable Bushings and Structural Parts

Caroline Jia

Oct 15, 2026

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Glass Fiber Series

Can 3240 Epoxy Resin Glass Fiber Laminated Sheet Improve Insulation Reliability in Busbar Systems?

Busbar systems carry high currents across power distribution networks, switchgear panels, and industrial motor assemblies. The insulation protecting these conductors faces constant thermal cycling, voltage stress, mechanical vibration, and chemical exposure. When insulation fails, the consequences range from unplanned downtime to catastrophic electrical faults. The 3240 Epoxy Resin Glass Fiber Laminated Sheet directly addresses these failure modes. Manufactured from alkali-free woven glass fiber cloth impregnated with an epoxy-phenolic resin blend and hot-pressed under controlled conditions, this thermoset laminate delivers measurable dielectric strength, structural rigidity, and temperature stability that generic insulation materials simply cannot match in demanding busbar environments.

James Yang

Oct 15, 2026

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Phenolic Series

Phenolic Cotton Sheet Provides Wear Resistance for Gears, Bearings and Mechanical Parts

Caroline Jia

Oct 14, 2026

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Glass Fiber Series

Antistatic Durostone Sheet for Wave Soldering Pallets and Precision SMT Tooling

James Yang

Oct 14, 2026

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Phenolic Series

3526 Phenolic Cloth Laminated Tube for Bushings, Spacers, and Custom Electrical Assemblies

Caroline Jia

Oct 14, 2026

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