Import 4-Layer Pcb — Buy in Bulk from Supplier in China
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4-layer PCB
This 4-layer PCB is engineered for compact electronic assemblies where signal integrity and thermal stability are critical. The multilayer construction reduces electromagnetic interference, making it suitable for high-frequency applications in telecommunications, automotive systems, and medical devices. The board supports advanced materials that maintain reliability under varying operational conditions, with a design optimised for easy assembly and multiple mounting techniques.
The PCB uses FR4 as the standard substrate, a common choice for its balance of mechanical strength, dielectric properties, and cost-effectiveness. Typical copper thickness for a 4-layer board ranges from 1 oz to 2 oz per layer, with standard board thicknesses of 1.6 mm or 0.8 mm. Surface finishes often include HASL, ENIG, or OSP, each selected based on the application’s soldering and environmental requirements.
Manufacturers in consumer electronics, industrial controls, and IoT devices use these boards for their ability to integrate complex circuitry in a small footprint. Buyers should confirm the exact stack-up, impedance control requirements, and thermal management needs with the supplier. Lead times and packaging options vary based on order volume, with standard vacuum-sealed bags used to prevent moisture absorption during transit.
| Layers | 4 |
| Material | FR4 typical |
| Board Thickness | 1.6 mm typical |
| Copper Thickness | 1 oz typical per layer |
| Minimum Drill Size | 0.2 mm typical |
| Minimum Track and Clearance | 0.125 mm typical |
| Surface Finish | HASL, ENIG, or OSP typical |
| Dielectric Constant (FR4) | 4.2 typical at 1 MHz |
| Operating Temperature | -40°C to 130°C typical |
| Standard Compliance | ISO 9001 typical, RoHS typical |
Longjiang Circuit International Ltd. is based in Shajing Town, Bao’an District, Shenzhen, Guangdong, China, with its registered address at No 2 Building, Wanxia Industry Park. The company operates within the PCB manufacturing sector, specialising in multilayer boards for industrial and consumer electronics. Its location in Shenzhen, a hub for electronics production, positions it close to key material suppliers and logistics networks.
The supplier holds a harbor trust tier, indicating a verified operational presence. While the response rate and average response hours are currently unrecorded, the company’s focus on PCB fabrication suggests a commitment to technical precision. Buyers should confirm capabilities such as impedance control, via plating, and testing protocols directly, as these details are not specified in the available profile.
| 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 |
Sourcing 4-layer PCB from Longjiang Circuit International Ltd. - China Import Guide
Before placing an order, verify the PCB’s stack-up configuration, as this defines the layer arrangement and impedance characteristics. Confirm whether the supplier can accommodate custom stack-ups or if they adhere to standard configurations like 1-2-3-4 or 1-4-5-6. Additionally, request samples or a prototype run to validate the design against your application’s electrical and mechanical requirements.
Logistics details such as lead time, Incoterms, and shipping methods should be clarified upfront. Standard lead times for 4-layer PCBs range from 5 to 10 working days, but this can vary based on order volume and complexity. Confirm whether the supplier offers DDP (Delivered Duty Paid) or FOB (Free On Board) terms, and clarify responsibility for import duties and customs clearance.
Quality checks should include visual inspection for defects like scratches, delamination, or misaligned layers, as well as electrical testing to ensure continuity and isolation. Request the supplier’s quality control process documentation, including their adherence to IPC-A-600 (Acceptability of Printed Boards) and IPC-6012 (Qualification and Performance Specification for Rigid Printed Boards). Inspection reports should accompany each shipment for traceability.
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30 suppliersBuy & Import 4-Layer Pcb — Wholesale Supply from China
Securing a reliable supply chain for 4-Layer Pcb is critical for maintaining your business operations. Longjiang Circuit International Ltd., a verified supplier located in China, provides high-quality 4-Layer Pcb ready for international export. By connecting directly with this supplier, buyers can bypass intermediaries, negotiate custom wholesale pricing, and arrange bulk shipments. This product is a key offering within the PCB industry, catering to distributors, wholesalers, and importers worldwide.
Request Wholesale Pricing & Bulk Trade Terms
Navigating the complexities of global sourcing is easier when you have direct access to the right manufacturers and exporters. When importing 4-Layer Pcb from China, buyers can discuss shipping logistics, packaging requirements, and preferred payment terms directly with Longjiang Circuit International Ltd.. This seamless communication is powered by EximNext, a premier import export marketplace that connects ambitious buyers with verified global sellers across every major industry.
About Longjiang Circuit International Ltd. — Verified Supplier in China
We understand that verifying supplier credentials is a top priority for importers. Longjiang Circuit International Ltd. is part of our extensive network of vetted international exporters. Browse more products in the PCB category or discover new suppliers across the PCB sector. Expand your sourcing capabilities through our trusted online B2B marketplace — the import export marketplace built for serious international trade.
International Shipping & Import Guidelines for 4-Layer Pcb
When importing 4-Layer Pcb from China, buyers should consider shipping terms (FOB, CIF, EXW), customs documentation requirements, and payment security. Contact the supplier to discuss the best logistics options for your destination country.
Frequently Asked Questions About 4-Layer Pcb
How can I get the wholesale price for 4-Layer Pcb?
Click the "Request Quotation" button to contact Longjiang Circuit International Ltd. directly. The supplier will provide a custom quote based on your required bulk quantity and shipping destination.
Can I buy 4-Layer Pcb in bulk from China?
Yes, Longjiang Circuit International Ltd. provides 4-Layer Pcb for bulk export from China. You can negotiate the MOQ, packaging details, and shipping terms directly with the supplier.
What shipping terms are available for this product?
Shipping terms such as FOB, CIF, or EXW can be negotiated directly with Longjiang Circuit International Ltd.. Contact the supplier to discuss the best logistics options for importing 4-Layer Pcb to your country.
How do I request a sample of 4-Layer Pcb?
Send a direct message to Longjiang Circuit International Ltd. through our platform to request a product sample before committing to a large wholesale order.
Is it safe to source products from this supplier?
Longjiang Circuit International Ltd. is a registered and verified supplier on EximNext. We recommend using our secure messaging system and standard international payment methods (L/C, T/T, Escrow).
What specifications should I ask for when importing 4-Layer Pcb?
Request a detailed product data sheet including grade, purity, dimensions, material composition, and applicable industry standards from Longjiang Circuit International Ltd..
Does Longjiang Circuit International Ltd. offer custom packaging or private labeling?
Many suppliers on EximNext, including Longjiang Circuit International Ltd., offer custom packaging and private label options for bulk wholesale orders.
What payment methods are accepted for international orders?
Common payment methods include Letter of Credit (L/C), Telegraphic Transfer (T/T), Documents against Payment (D/P), and Escrow services.
Can I find more PCB suppliers on EximNext?
Yes, EximNext hosts a wide network of verified PCB manufacturers, exporters, and wholesalers across 200+ countries.
How do I contact Longjiang Circuit International Ltd. for a bulk trade inquiry?
Click "Request Quotation" or "Contact Supplier" on this page. Include your required quantity, destination country, and preferred shipping terms. All communications are managed securely through our import export marketplace.
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