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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Glass Fiber Series

CNC Machining FR4 94V0 Epoxy Board for Precision Insulation Parts

James Yang

Oct 20, 2026

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Phenolic Series

Phenolic Cotton Cloth Laminated Tube: CNC Cutting and Drilling Guide

Caroline Jia

Oct 20, 2026

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Phenolic Series

CNC Machining 3026 Phenolic Cloth Laminated Sheets for Insulation Parts

The 3026 Phenolic Cloth Laminated Sheet is always at the top of the list when engineers and procurement teams are looking for a material that can handle mechanical stress, electrical insulation, and thermal exposure all at the same time. The layers of this canvas-weave phenolic laminate are made of coarse cotton cloth that has been soaked with phenolic resin and then pressed together at high temperatures and pressures to make a hard board that can handle being hit. It comes from JingHong in widths from 0.5mm to 100mm and a typical sheet size of 1020mm x 2020mm. This gives engineers a lot of options without losing sturdiness. This material gives consistent, measurable performance and is certified by ISO 9001, ASTM D578, and UL 94. It can be used to make insulation parts for switchgear, transformer supports, or precision-machined gears.

Caroline Jia

Oct 20, 2026

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Glass Fiber Series

How to Reduce Burrs When CNC Drilling FR4 94V0 Epoxy Board

James Yang

Oct 19, 2026

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Phenolic Series

How to Control Edge Quality in CNC Machining Phenolic Cloth Laminates

Caroline Jia

Oct 19, 2026

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Phenolic Series

CNC Turning Phenolic Paper Laminated Tubes for Precision Insulators

Caroline Jia

Oct 19, 2026

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