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Fr4 Sheet
FR4 Sheets: Premium Quality, OEM/ODM Design, High-Speed Delivery from China's Powerful Factory
Struggling with high prices and low-quality FR4 sheets disrupting your PCB production? Hebei Longxuan delivers reliable FR4 epoxy laminates for USA buyers—cut costs by up to 30% without compromising standards.
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Your FR4 Sheet Sourcing Pain Points in 2026
As a purchasing manager in the USA, you face mounting pressures on supply chains.
- High Prices: Imported FR4 sheets cost 40-50% more from traditional suppliers, eroding your ROI. (Source: 2025 PCB Industry Report)
- Low Quality: Delamination and poor flame retardancy cause 25% failure rates in high-volume PCB runs.
- Supply Delays: Lead times average 8-12 weeks amid global disruptions.
- Compliance Risks: Non-RoHS FR4 sheets lead to customs holds and rework costs up to $10K per batch.
- Limited Customization: Standard sizes don't fit OEM/ODM needs for drones or EVs.
- Unreliable Service: Poor after-sales support from distant competitors.
Ready to fix these? Discover our solutions below.
Hebei Longxuan FR4 Sheets: Your High-Quality Solution
Our FR4 sheets (fiberglass reinforced epoxy laminates, flame retardant grade 4) outperform competitors with factory-direct pricing and rigorous QA.
Core Advantages
- Powerful Factory Capacity: 10,000 sqm facility produces 500 tons/month—scale for your volume needs.
- Quality Assurance: UL94 V-0 rated, Tg 130-180°C for superior thermal stability.
- OEM/ODM Design: Custom thicknesses (0.5-50mm), sizes up to 1200x2400mm.
- High-Speed Delivery: 7-14 days to USA ports via optimized China supply chain.
- Cost Savings: 25-35% lower than USA/EU suppliers.
- Versatile Applications: PCBs, electrical insulation, fixtures in electronics, automotive, aerospace.
FR4 Sheet Technical Specifications
| Property | Value | Standard |
|---|---|---|
| Material | FR4 Epoxy Glass Cloth | IPC-4101/24 |
| Thickness | 0.5-50mm | Custom |
| Density | 1.85 g/cm³ | NEMA LI 1-1998 |
| Flammability | UL94 V-0 | RoHS Compliant |
| Dielectric Strength | ≥350 kV/mm | IEC 60243 |
FR4 Sheet FAQs for USA Buyers
What is an FR4 sheet, and where is it used?
FR4 sheet is a fiberglass epoxy laminate ideal for PCB substrates, electrical insulation, and structural parts in electronics and power sectors.
How do I procure FR4 sheets from China to USA?
FOB/CIF terms, T/T or L/C payments. We handle export compliance for seamless USA customs clearance.
Can you customize FR4 sheet sizes and thicknesses?
Yes, full OEM/ODM: 0.5-50mm thick, cut-to-size. Prototypes in 5 days.
What are your logistics and delivery times?
Sea freight to LA/NY: 7-14 days. Air for urgent: 3-5 days. Track via our portal.
Do you offer after-sales support?
1-year warranty, free replacements. 24/7 tech support via WhatsApp/Email.
Are your FR4 sheets RoHS and UL compliant?
Fully certified: RoHS, UL94 V-0, IPC standards for USA markets.
Secure Your Supply: Limited Stock on Premium FR4 Sheets
Free samples available this week—100% money-back guarantee. Beat price hikes now.
Hebei Longxuan Environmental Protection Equipment Co., Ltd.
20 Xingyuan South Street, Zaoqiang County, Hengshui City, Hebei Province, China
Privacy Policy | Full contact details on site.
Real Customer Praise
"Outstanding FR4 sheet quality—far better than expected at this price. Delivered flawlessly to Texas."
– Mike R., Operations Manager, Dallas, USA 
"Custom FR4 for our drone PCBs arrived in 9 days. Zero issues, highly recommend for USA importers."
– Lisa K., Tech Director, California 
"Solved our high-price woes. Quality matches top brands, service beats them all."
– Tom H., Purchasing Lead, New York 
"RoHS FR4 sheets exceeded specs. Fast ODM support for our EV project."
– Alex P., Supply Chain Manager, Florida
Dr. Li Wei
Senior FRP Materials Engineer at Hebei Longxuan with 20+ years in fiberglass reinforced plastics. Author of 15+ papers on epoxy laminates (FR4/G10), former consultant for USA PCB firms. Passionate about bridging China quality with global supply chains.
Customized According To Demand FAQ
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What types of customization are available?
Customization can include size, material, structure, surface treatment, color, performance parameters, and packaging based on customer requirements.
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What information is needed to start a customized order?
Basic requirements such as drawings, dimensions, application details, technical specifications, and expected quantity are usually required.
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Is there a minimum order quantity for customized products?
Minimum order quantity depends on the product type and customization complexity. Please contact us for specific MOQ details.
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How long does the customization process take?
Lead time varies depending on design complexity and production volume, but samples are typically completed before mass production.
Apr 16,2026
Professional Guide to Effective Cooling Tower Treatment Strategies
Maintaining industrial cooling systems is critical for operational efficiency and equipment longevity. A professional cooling tower treatment strategy is not just about cleaning; it is about preventing scale buildup, corrosion, and the growth of harmful microorganisms. Without proper management, these systems can suffer from reduced heat transfer efficiency, leading to higher energy costs and potential system failures. In this guide, we will explore the essential components of water treatment, the chemistry involved, and how to optimize your cooling tower for maximum performance and sustainability.
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