Your Trusted Professional PCB Board Manufacturer
- 16+ Years Experience of PCB Manufacturing Service
- No Mininum Order Quantity Limited
- 7*24 Hours Sales Service
Full Manufacturing Capabilities
KSJ delivers full PCB assembly solutions for advanced and complex electronic products, utilizing diverse PCB materials to ensure superior performance and reliability.
Custom PCB Assembly
We work with a variety of PCB materials and technologies to deliver reliable solutions for industries such as telecommunications, automotive, medical, and consumer electronics
7/24 Online Support
Enjoy peace of mind with our 7/24 online support — our experts are always available to answer your questions and keep your project on track.
Our Main Service
Reliable PCB Fabrication
Up to 32 layers, HDI 3, 10 oz Cu. Blind/buried vias, Via-in-Pad. KB/Shengyi/Rogers/lsola. Flex/Rigid-Flex/Metal Core. Impedance control, lPc Class 3. Advanced online quotation
Turnkey PCB Assembly
10 assembly lines Mixed, double-sided assembly AOl, X-ray, functional testing, lC programming, conformal coating & more 01005 (0402),BGA,CSP, QFN. Global supply Online turnkey quotation
Layout Design
10+ years layout experience Up to 60GHz, 42 layers Praised by 1000+ customers EMC and Sl verification DFM verification IP protected and encrypted
Free DFM Analysis
150+ DFM/DFA checks Footprint checker, panelizationtool, impedance tool & more Developed by WCX experts Free for everyone Desktop suite & online Gerber Viewer available
Component Purchasing
Global sourcing capabilities Mature supply chain Competitive pricing & lead times 100% genuine guarantee 600,000+ in-stock partswithonline marketplace (HQ Online)
PCB Board Design Capabilities
- Quality Grade：Standard IPC 2-3
- Layers：1~64 Layers
- Board Size：Max. 610 x 1200mm( 24" X 47" )
- Copper Weight: 1.0oz - 15.0oz
- Min Trace/Space:2mil/2mil (0.05mm/0.05mm)
- Mechanical : 0.1mm
- Laser : 0.05mm
Custom PCB Assembly for Different Industries
KSJ is one trusted PCB assembly service provider, and all the PCBs are used in different industries, such as :pacemakers, monitors medical imaging systems, Automotive, X-rays, and telemedicine.Aerospace, etc.
KSJ PCB for Automotive Applications
KSJ’s Multilayer PCB has a wide range of automotive applications. These are available inboth electric and hybrid automobiles.
KSJ PCB for Medical Applications
Our medical PCBs are produced in a controlled environment using ENIG surface finishes, tight impedance control, and stringent quality inspection, ensuring they meet international medical standards and certifications.
KSJ PCB for Aerospace Applications
We provide mission-critical solutions for applications such as navigation systems, communication modules, flight control units, satellite electronics, and radar systems.
KSJ PCB for Military Applications
We have supported critical projects in military communication systems, radar control, weapon guidance, surveillance equipment, and secure data processing modules.
Advanced PCB Solutions for Your Business
We are particularly skilled in producing multilayer PCBs, with a strong track record in delivering projects across high-end sectors. In addition to conventional multilayer PCBs, we are highly specialized in manufacturing HDI (High-Density Interconnect) PCBs, which are widely used in applications requiring miniaturization, high speed, and high reliability. Our HDI capabilities include laser drilling, blind and buried vias, and fine line/space technologies that support next-generation electronic products.
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12 Layers Board
Application:Industrial Power Supply
- Board Thickness: 3.0mm
- Material: S1000-2
- Line Width/space:8/10mil
- Minimum Hole size:0.35mm
- Surface Finish: ENIG
- Special Technology: Resin Plugging + 4 OZ inner layer + cover-layer
6 Layers Board
Application:Medical
- Board thickness: 1.6mm
- Material: Panasonic + S1000-2
- Line width/space: 4/4mil
- Minimum hole size: 0.2mm
- Surface finish: ENIG
- Special technology: rigid-flex
6 Layers Board
Application:Medical
- Board thickness: 2.4mm
- Material: TU872 + R4350
- Line width/space: 5.9/6.0mil
- Minimum hole size: 0.3mm
- Surface finish: ENIG
- Special technology: hybrid + high frequency
24 Layers Board
- Board thickness: 3.0mm
- Material: M6
- Line width/space: 3.5/4mil
- Minimum hole size: 0.25mm
- Surface finish: ENIG
- Special technology:back drilling + impedance + depth milling +irregular copper
12 Layers Board
Application:Communication
- Board thickness: 2mm
- Material: Panasonic M6
- Line width/space: 4 / 4mil
- Minimum hole size: 0.3mm
- Surface finish: ENIG
- Special technology: 1-2 / 1-3 / 1-4 / 9-12 /10-12 / 11-12 six groups of blind holes +resin plugging + impedance
8 Layers Board
Application:Automotive
- Board thickness: 4.5mm
- Material: S1000-2
- Line width/space: 8 / 9mil
- Minimum hole size: 0.4mm
- Surface finish: ENIG
- Special technology: resin plugging+heavycopper+same IC pins
20 Layers Board
Application:Chip Testing
- Board thickness: 5.5mm
- Material: EM-370(Z)
- Line width/space: 3 / 3mil
- Minimum hole size: 0.25mm
- Surface finish: Gold plating 30U”
- Special technology: High Aspect Ratio++Any Layer
32 Layers Board
Application:Chip Testing
- Board thickness: 6.0mm
- Material: S1000-2
- Line width/space: 8 / 6mil
- Minimum hole size: 0.4mm
- Surface finish: Immersion Gold
- Special technology: High Aspect Ratio+resin plugging
Why 1000+ Partners Choose KSJ
Partnering with KSJ means choosing quality, efficiency, and long-term reliability.
Strict Quality Control
Each board goes through 100% electrical testing, AOI/AVI inspection, and strict process quality control to ensure reliability and performance
Experienced R&D Team
Our skilled engineers provide strong support for design review, DFM analysis, and custom project development.
Fast Delivery
With 10 production lines and an efficient workflow, we ensure rapid turnaround for both prototypes and mass production.
One-Stop Service (PCB + PCBA)
From PCB fabrication to component sourcing and assembly, we offer complete turnkey solutions to save time and cost.
Advanced Equipment & Technology
Our factory is equipped with state-of-the-art machines for laser drilling, gold plating, SMT, and automated inspection.
Customized OEM/ODM Solutions
Flexible production capabilities tailored to your unique technical requirements and project goals.
Competitive Pricing
Factory-direct pricing with no middleman. We balance cost and quality to offer maximum value for your project.
Global Customer Support
Efficient communication and after-sales service by a professional English-speaking team to support clients worldwide.
Our Factory
At KSJ, our production strength lies in our well-structured and fully equipped factory. Spanning a modern manufacturing space, we operate 10 high-efficiency production lines that are designed to handle complex PCB and PCBA orders with speed and precision.
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KSJ-Your PCB Fabrication Specialist
At KSJ, we are not only a manufacturer but also a trusted partner. We understand the importance of precision, speed, and reliability in today’s fast-paced technology markets. Whether you’re looking for multilayer PCBs, turnkey PCBA services, or customized technical solutions, KSJ is ready to support your business with excellence and integrity.
Teamwork Makes the Dream Work
Our team has been dedicated to the production of PCB for many years. By addressing various PCB challenges, we continuously enhance our technology, striving to deliver exceptional value to our customers with our PCB products.
Various PCB Assembly Service to Apply Different Applications
KSJ offers custom PCB assembly service for different applications, for example, aerospace, military, medical.
automotive,industrial control, consumer electronics, and so on.
- Power Supplies
- Audio and Video Devices
- Mobile Devices
- Measuring Equipment
- Scientifc Instrumentation
- LED lighting
- Control Systems
- Computer Electronics
- Testing Equipment
- CT scanners
- Navigation Devices
- Surrounding Monitors
- Home Appliances
- X-Ray screens
- Entertainment Systems
We can assure the PCB/PCBAs we ship out are 100% good, because the production is strickly by ISO 9001/ ISO 13485 and UL, also, there are serial test for each PCB/PCBAs, such as ICT test, Flying Probe Test, AOI Test, X-ray inspection, and functional test.
PCB Fabrication Surface Finishes
KSJ offers a wide range of custom surface fnishes. How to choose the right typeof final surface fnish is very important in PCB fabrication. Selecting the correctsurface fnish for your application is critical for performance.
- ENlG (Electroless Nickel lmmersion Gold)
- ENEPlG (Electroless Nickel Electroless Palladium lmmersion Gold)
- ElectrolyticNickel/Gold-Ni/PCB(Hard/Soft Gold)
- Immersion Silver
- Immersion Tin
- Lead-Free HASL (Hot Air Solder Leveling)
- OSP (Organic Solderability Preservatives
PCB Assembly Equipment
KSJ is a leading PCB assembly supplier and factory in China and we haveimported many hi-tech production equipment from overseas countries. Youwill have a look at the PCB manufacturing machines as follows:
- Pick-and-Place machines
- Solder paste printing machines
- Solder paste inspection machines
- Glue dispensing machines
- Reflow soldering machines
- Wave soldering machines
- Automatic Optical
- In-Circuit Test (lCT)fxture
What our clients say about us
Don’t just take our word for it. See what our satisfied customers say about our high-quality and competitively-priced PCB. Read their reviews and discover why our products are the best choice.
You May Have A Question On Below Problem
We are a direct PCB and PCBA manufacturer based in China, with 16 years of production experience and 10 advanced production lines.
We specialize in Medical PCBs, and we also provide complete PCBA services. Our products are widely used in military, aerospace, automotive, medical, industrial power, and semiconductor testing industries.
Yes, we offer OEM & ODM services. You can send us your Gerber files, BOM lists, and any custom requirements for a complete solution.
Yes. We offer component sourcing services through authorized suppliers (such as Digi-Key, Mouser, etc.), or you can send components to us.
Our factory is certified with ISO 9001, ISO 14001, UL, and RoHS compliance. We follow IPC standards to ensure product quality.
Every board undergoes 100% electrical testing, AOI/AVI inspection, and functional testing (for PCBA). We also implement strict in-process quality control throughout production.
Get One Stop Stone Solution For Your Projects
KSJ helps clients to increase revenue in the electronic industry. As we have a special team and focusing on this field for more than 16 years, we can save your money & time.
Certifications
KSJ-PCB
