Advanced EMS & PCB Assembly Solutions
High-quality SMT and through-hole assembly with advanced technology and rigorous quality control
Turnkey PCB Assembly & Manufacturing Services
Our SMT PCB Assembly Capacity
High-Capability SMT Assembly Lines
- 6 SMT Lines-10 million chips per day (01005 0402, 0201 with 8 million per day)
- 10 Zone N₂ Reflow OvenReflow
- BGA Rework Machine
Wide Range of Packages Supported
• BGA • QFN • SOIC • PLCC • QFP • uBGA • POP
• DFN • LQFP • TQFP • TSSOP • SSOP • MSOP • WLCSP • LGA
Different Testing Services
- Solder Paste Inspection
- 3D AOI
- X-ray Testing
- In-circuit Testing
- IC Programming
- Functional Testing
Leading Precision PCBA & EMS Partner in China
Our THT PCB Assembly Capacity
Assembly Processes
- Hand soldering & manual component insertion
- Automated axial / radial insertion
- Dual-wave soldering
Solder & Compliance
- Lead-free (RoHS) & Tin-Lead (SnPb) processes
- High / low melting point solder applications
Scale & Quality Assurance
- Prototype build to high-volume production
- Functional testing & automated optical inspection (AOI)
Material Versatility
- Supports Metal Core PCBs,Flex-Rigid PCBs
- Flexible PCBs, High-Tg FR4 & standard FR4 PCBs
Why Partner With Us for Advanced PCBA?
Engineered for global high-reliability requirements, our manufacturing ecosystem delivers end-to-end electronics assembly solutions—from ultra-fine pitch component placement to rigorous automated inspection.
- Turnkey Services
We offer full turnkey solutions covering PCB fabrication, component procurement, assembly and functional testing to handle every stage of your project.
- Quality Assurance
Quality is our top priority. 100% inspection guarantees all delivered PCBAs meet stringent quality requirements.
- Reliable Supplier Network
Our robust supplier ecosystem allows us to source certified components with stable, cost-competitive pricing.
- Quick Turnaround
We support prototype, small-batch and mass production, delivering PCBAs strictly within your required timelines.
Featured PCBA Projects & Success Stories
Explore a Selection of Our Proven PCBA Project Case Studies
Rapid Insertion Board
Double-Sided Bare PCB
MMA Electronic Controller
Power Management and Control PCBA
HarbourPilot Mk59 Motherboard
Embedded Industrial Core Expansion PCBA
Industries We Serve
Advanced Turnkey PCB Assembly Engineered for Demanding Global Industries
Telecom & 5G Infrastructure
High-frequency and high-density PCBA solutions engineered for 5G base stations, optical transmission, and robust network infrastructure.
Industrial Automation & Control
Ruggedized circuit assemblies built to withstand harsh environments, extreme temperatures, and continuous heavy-duty operation.
Automotive & EV Systems
IATF 16949 compliant manufacturing delivering zero-defect reliability for ADAS, infotainment, and EV power control systems.
Medical Electronics & Diagnostics
ISO 13485 certified precision PCBA designed for life-critical diagnostic equipment, imaging systems, and portable monitors.
AI & High-Performance Computing
High-performance computing boards optimized for fast signal processing, advanced GPUs, and intense neural network workloads.
Smart IoT & Wireless Modules
Ultra-compact, low-power, and cost-effective wireless module assembly tailored for smart homes and industrial automation.
PCB Assembly & Manufacturing FAQs
Q: How do I submit Gerber and BOM files for a PCBA assembly project to KingTop?
A: You can upload the files via the form on our official website or send them directly to our designated sales email address. To enable our engineering team to conduct a rapid DFM review, we require Gerber files (including layer information), a BOM list (including manufacturer part numbers/MPNs), and a Centroid (coordinate) file for SMT placement.
Q: What types of PCB surface finish processes does KingTop support?
A: We support a wide range of mainstream PCB surface finishes, including HASL Lead-Free, ENIG (Electroless Nickel Immersion Gold), Immersion Tin, Immersion Silver, OSP (Organic Solderability Preservatives), and Hard Gold Plating, which can be flexibly customized according to your product application scenarios and soldering requirements.
Q: What quality tests do you perform during the PCBA manufacturing process?
A: We implement rigorous, multi-layered quality inspection standards. Regular shipments undergo AOI (Automated Optical Inspection) and visual checks prior to delivery. For complex industrial or medical-grade boards, we also provide X-ray inspection (non-destructive testing for BGA and QFN soldering), ICT (In-Circuit Testing), and FCT (Functional Testing) to ensure zero-defect delivery for every single board.
Q: What is the typical lead time for KingTop's PCB assembly services?
A: Standard PCB prototyping combined with PCBA SMT assembly typically takes 3 to 7 working days. Actual lead times depend on component procurement cycles, board layer counts, and order volumes. For urgent projects, we offer expedited services to meet your launch deadlines.
Q: How do you handle situations where certain components are out of stock in the market?
A: We maintain a global component supply chain network partnering with top-tier distributors such as DigiKey, Mouser, and Arrow. In the event of factory stockouts or extended lead times, our professional procurement team will communicate with you in advance. Upon receiving your written approval, we will recommend fully compliant, factory-guaranteed alternative parts (cross-references), and we never blindly use unconfirmed materials.
Q: Does KingTop's PCBA assembly service support turnkey and kitting (consignment) options?
A: Yes, we do. We offer all-inclusive turnkey (full turnkey) services where we handle PCB manufacturing and complete component procurement. We also support kitting / consignment models where customers provide part or all of the materials to be shipped to us for assembly only, adapting flexibly to your supply chain strategy.
Q: What are the price or service differences between the prototyping stage and low-volume production?
A: The prototyping stage focuses on rapid design verification and identifying/resolving DFM issues, for which we provide free engineering file reviews. Low-volume and mass production focus on optimizing manufacturing costs, improving SMT placement efficiency, and maintaining stable batch yields. As order quantities increase, setup fees are effectively amortized, resulting in more competitive unit pricing.
Q: How do you ensure the security of customers' PCB design files and trade secrets?
A: We place a high priority on intellectual property protection. All customer-uploaded Gerber files, BOM lists, and technical documentation are bound by strict non-disclosure agreements (NDAs). We utilize enterprise-grade encrypted servers for data storage and will never disclose or leak your product design data to any third party.
Ready to Scale Your Production? Contact Us Now.
Partner with KingTop Technology for reliable, high-quality electronics manufacturing solutions. Contact our team today to discuss your requirements.