Blog - JingHong

Industry standards

The Complete Guide to FR4 Sheet in 2025

James Yang

Jun 5, 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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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

Best CNC Machines for Machining Fiberglass and Phenolic Sheets

James Yang

May 14, 2026

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Glass Fiber Series

Common Problems in FR4 CNC Machining and How to Solve Them

James Yang

May 14, 2026

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Glass Fiber Series

Choosing the Right CNC Machine for FR4 Sheet Fabrication

James Yang

May 14, 2026

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Phenolic Series

Bakelite Sheet CNC Machining: Tools, Speed, and Techniques

Caroline Jia

May 13, 2026

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Glass Fiber Series

FR4 vs G10 Machining: CNC Cutting Differences Explained

James Yang

May 13, 2026

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Glass Fiber Series

3240 Epoxy Sheet vs FR4: CNC Machining Performance Comparison

Engineering managers and buying teams need to know the differences in performance between 3240 epoxy sheet and FR4 materials in order to choose the right insulation laminates for precise CNC cutting. The 3240 epoxy sheet is made from knitted glass cloth that is free of alkalis and is filled with epoxy phenolic resin. It has great mechanical strength and temperature stability up to 155°C, which makes it perfect for motor parts and transformer shielding. FR4, on the other hand, is widely used in PCB making because it is very resistant to flames and doesn't change shape easily. The insulating properties of both materials are strong, but they have very different cutting properties, tool wear patterns, and cost-effectiveness profiles. These differences have a direct effect on production times and part quality in electrical, automobile, and industrial machinery uses.

James Yang

May 13, 2026

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