High-Precision PCB Assembly & Manufacturing

One-stop electronic manufacturing services including PCB design, fabrication, component sourcing, and assembly for industrial, medical, automotive, and communication applications.

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10+

Years of Industry Experience

99.8%

Assembly Yield Rate

24-72h

Fast Turnaround Prototypes

About TONGZHAN

We provide high-precision, multi-species, small-batch one-stop electronic manufacturing services, including PCB design, PCB manufacturing, component sourcing, and PCB assembly. With over a decade of experience, our team delivers reliable, RoHS-compliant solutions tailored to your project needs.

Our expertise spans high-speed digital systems, mixed-signal designs, and complex multi-layer boards used in industrial control, medical devices, automotive electronics, telecommunications, and IoT applications.

Expert team with 10+ years of experience
Certified engineers and supply chain professionals
Focus on latest international market trends
Competitive pricing with certified suppliers

Our Core Services

From concept to production, we offer comprehensive PCB manufacturing and assembly solutions with precision, speed, and reliability.

High-Speed PCB Design

Expert design for 40G/100G systems with signal integrity (SI), power integrity (PI), and EMC simulation to ensure performance and compliance.

• 40G / 100G System Design
• SI/PI Analysis
• EMC Simulation
• Impedance Control

Mixed Digital PCB Design

Precision layout for mixed-signal circuits combining analog and digital components with noise isolation and grounding optimization.

• Analog-Digital Integration
• Noise Reduction Techniques
• Ground Plane Optimization
• Thermal Management

Multi-Layer PCB Fabrication

Advanced fabrication of rigid, flexible, and rigid-flex PCBs with up to 20+ layers, blind/buried vias, and thick copper options.

• Flexible & Rigid-Flex Boards
• Blind/Buried Vias
• Thick Copper & Aluminum PCBs
• HDI Technology

SMT/SMD Assembly

High-speed pick-and-place SMT assembly with precision placement down to 01005 packages and micro BGAs.

• 01005 to 2512 Components
• Micro BGA & QFN Packages
• AOI & X-Ray Inspection
• Lead-Free & Leaded Options

Through-Hole Assembly

Reliable thru-hole soldering for high-power, high-reliability, and legacy components requiring mechanical strength.

• Manual & Wave Soldering
• High-Power Connectors
• Military & Aerospace Grade
• Mixed Technology Support

Turnkey PCB Assembly

Full-service solution from component sourcing to final assembly, testing, and delivery — no hassle, no delays.

• Complete BOM Fulfillment
• Supplier Certification
• Quality Assurance
• Fast Delivery

Conformal Coating

Protective coating for PCBs to resist moisture, dust, chemicals, and temperature extremes for harsh environments.

• Acrylic, Silicone, Urethane
• Selective Coating
• IPC-CC-830B Certified
• Environmental Protection

Component Sourcing

Global supply chain access with certified suppliers, counterfeit prevention, and competitive pricing for all components.

• 10+ Years Expert Team
• Authorized Distributors
• Obsolete Part Replacement
• Market Intelligence

Why Choose PrintedBoardAssembly.com?

We combine cutting-edge technology, experienced engineering, and strict quality control to deliver reliable, high-performance PCB solutions.

RoHS Compliant

Lead-free and environmentally safe manufacturing processes meeting international standards.

Fast Turnaround

Quick-turn prototypes in 24-72 hours and production batches delivered on schedule.

Quality Guaranteed

AOI, X-ray, and functional testing ensure every board meets your specifications.

Expert Support

Dedicated engineering team available for DFM, design review, and technical consultation.

Frequently Asked Questions

Find answers to common inquiries about our PCB services.

What file formats do you accept for PCB design?

We accept Gerber files (RS-274X), IPC-2581, ODB++, and native design files from Altium, KiCad, Eagle, and Cadence Allegro.

Do you offer DFM checks?

Yes, we provide free Design for Manufacturability (DFM) analysis to ensure your design is optimized for production.

What is your turnaround time for prototypes?

Standard turnaround is 3-5 working days. We also offer 24-hour and 48-hour express options for urgent projects.

Are your assemblies RoHS compliant?

Yes, all standard assemblies are RoHS compliant with lead-free soldering. Non-RoHS options are available upon request.

Can you source hard-to-find components?

Yes, our component sourcing team specializes in locating obsolete, allocated, and long-lead-time parts with full traceability.

China Quality Suppliers fobcompany.info

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