Agriculture›
Apparel and fashion accessories›
Construction & real estate›💡Electronic & Electrical›🍎Food & Beverages›🛋️Home furnishing & supplies›⚗️Industrial goods & chemical›🪨Minerals & metals›📦Miscellaneous›
Agriculture›
Apparel and fashion accessories›
Construction & real estate›💡Electronic & Electrical›🍎Food & Beverages›🛋️Home furnishing & supplies›⚗️Industrial goods & chemical›🪨Minerals & metals›📦Miscellaneous›

This 4-layer PCB features heavy copper construction with 3oz copper thickness on all layers, making it suitable for high-current applications such as industrial control systems. The board uses FR4 as the base material, a standard epoxy laminate known for its mechanical strength and electrical insulation properties. Dimensions are fixed at 255mm by 278mm, with a board thickness of 2.0mm toleranced to ±0.18mm.
The design supports fine-pitch circuitry with a minimum hole size of 0.15mm, minimum line width of 3mil, and minimum line spacing of 3mil. Surface finishing is immersion gold at 2µ, providing a flat, solderable surface with excellent corrosion resistance. The solder mask is green, and the silkscreen is white, which are typical for industrial PCBs to ensure readability and durability.
Primary applications include power distribution boards, motor controllers, and other high-current industrial electronics where heavy copper is required to handle increased thermal loads. Buyers typically source these for custom designs in automation, renewable energy, and heavy machinery. Trade terms such as MOQ, lead time, and packaging are confirmed directly with O-Leading Supply Chain (hk) Co., Limited, with CNC routing and 100% inspection standard.
| Layer count | 4 |
| Copper thickness | 3oz on all layers |
| Base material | FR4 |
| Board thickness | 2.0mm ±0.18mm |
| Minimum hole size | 0.15mm |
| Minimum line width | 3mil |
| Minimum line spacing | 3mil |
| Surface finishing | Immersion gold 2µ |
| Solder mask | Green |
| Silk screen | White |
| Dimension | 255mm x 278mm |
| Inspection standard | IPC-A-600H / IPC-6012B Class 2/3 |
| Testing | 100% E-test, solderability test, microsection |
O-Leading Supply Chain (hk) Co., Limited is based in Danshui Town, Huiyang District, Huizhou, Guangdong Province, China. The company operates from Floor 13, Fortune Building, and holds a harbor trust tier, indicating a verified presence for international trade. Its focus includes PCBs and related electronic components, with this listing specialising in heavy copper boards for industrial use.
The supplier’s profile shows no recorded response rate or average response hours, which means buyers should initiate contact through provided channels to discuss technical and commercial details. The company does not disclose additional certifications, production capacity, or client references in the available data, so these should be requested directly for due diligence.
| Business Type | Supplier |
| Year Established | Recently Joined |
| Employees | Contact Supplier |
| Annual Revenue | Contact Supplier |
| Main Products | View Products Tab |
| Major Markets | Global |
| Response Time | <4h |
| Response Rate | New Supplier |
Before finalising an order, verify the copper thickness and base material specifications, as these are critical for high-current applications. Request the IPC-6012B Class 2/3 certification and inspection reports to ensure the PCB meets your reliability requirements. Confirm that the immersion gold surface finish meets your soldering and environmental standards.
Discuss logistics details such as lead time, which may be longer for heavy copper PCBs due to the additional processing required. Clarify Incoterms, as FOB Huizhou or Shenzhen are common for this region, and confirm whether the supplier can arrange shipping to your preferred port. Payment terms such as T/T or L/C should be negotiated upfront to align with your procurement processes.
For quality checks, inspect the PCB for visual defects such as scratches or misaligned layers upon receipt. Use a multimeter to verify circuit continuity and check the hole sizes and line spacing against your design files. If third-party validation is needed, arrange for an independent lab to perform dimensional and electrical testing to confirm compliance with your specifications.
Active buying requirements from importers looking for Similar products
Compare alternatives, find similar products and connect with verified suppliers
When sourcing 4layer With Heavy Copper 3oz From China for your business, securing the right balance of quality and cost is essential. O-Leading Supply Chain (hk) Co., Limited, a verified supplier based in China, offers this product for international export. By purchasing directly from the manufacturer or authorized exporter, buyers can negotiate favorable FOB prices starting at $0.1/Bags and manage bulk orders with a minimum order quantity (MOQ) of 1 Bags. This product is a staple in the PCB sector with strong demand from importing countries worldwide.
Importing 4layer With Heavy Copper requires careful attention to shipping logistics, customs compliance, and secure payment terms. O-Leading Supply Chain (hk) Co., Limited offers flexible shipping options such as Full Container Load (FCL) or Less than Container Load (LCL) via sea freight. Common payment methods for international B2B transactions include Letter of Credit (L/C), Telegraphic Transfer (T/T), and Documents against Payment (D/P). All transactions and RFQs are facilitated through EximNext, a leading import export marketplace designed to make cross-border trade secure and efficient.
Finding trustworthy partners is the foundation of successful importing. The supplier of this 4layer With Heavy Copper has been verified on our platform. Whether you are a distributor, wholesaler, or procurement manager, you can request a free quotation, ask for product samples, and finalize your bulk purchase with confidence. EximNext hosts thousands of verified manufacturers and exporters across 200+ countries. Explore similar products in the PCB category and connect with top-tier exporters on our comprehensive online B2B marketplace. Start your sourcing journey today.
Importing 4layer With Heavy Copper requires careful attention to shipping logistics, customs compliance, and secure payment terms. Common shipping options include Full Container Load (FCL) or Less than Container Load (LCL) via sea freight. Buyers should verify import duties in their destination country. Common payment methods include Letter of Credit (L/C), Telegraphic Transfer (T/T), and Documents against Payment (D/P).
The current listed wholesale price for 4layer With Heavy Copper 3oz From China from O-Leading Supply Chain (hk) Co., Limited is $0.1/Bags on FOB terms from China. Prices may vary depending on order volume, packaging, and destination. For the most accurate bulk quote, send a direct RFQ to O-Leading Supply Chain (hk) Co., Limited through EximNext.
The supplier, O-Leading Supply Chain (hk) Co., Limited, has set a Minimum Order Quantity (MOQ) of 1 Bags for 4layer With Heavy Copper. For sample requests or smaller trial orders, contact the supplier directly through our platform's inquiry system.
The HS Code classification for 4layer With Heavy Copper 3oz From China depends on the specific grade and form. Contact O-Leading Supply Chain (hk) Co., Limited through EximNext for the exact HS Code and customs documentation required for your destination country.
To import 4layer With Heavy Copper from China, negotiate shipping terms (FOB, CIF, or EXW) directly with O-Leading Supply Chain (hk) Co., Limited. Ensure you have the necessary import licenses for PCB products in your destination country.
Yes, O-Leading Supply Chain (hk) Co., Limited is a verified supplier on EximNext. You can view their complete company profile, business registration details, certifications, and export history before placing a bulk order.
For a complete technical data sheet or Certificate of Analysis (COA), send an inquiry directly to O-Leading Supply Chain (hk) Co., Limited through EximNext.
O-Leading Supply Chain (hk) Co., Limited offers 4layer With Heavy Copper with standard export packaging. Custom packaging, private labeling, and OEM/ODM options may also be available for large wholesale orders.
4layer With Heavy Copper is actively imported by buyers worldwide. Request a destination-specific CIF or CFR quote from O-Leading Supply Chain (hk) Co., Limited through our platform.
O-Leading Supply Chain (hk) Co., Limited maintains international quality certifications. These ensure that the 4layer With Heavy Copper meets international quality, safety, and regulatory standards required for cross-border trade.
Click "Request Quotation" on this product page, specify your required quantity, preferred shipping terms, and destination country. O-Leading Supply Chain (hk) Co., Limited will respond with a detailed wholesale quote including FOB pricing, lead time, and payment options.
Common payment methods include Letter of Credit (L/C), Telegraphic Transfer (T/T), Documents against Payment (D/P), and Escrow services. Confirm accepted terms directly with O-Leading Supply Chain (hk) Co., Limited.
Discover more products in PCB from verified suppliers worldwide.