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Contact QueenEMS - PCB Assembly Services

Contact Our PCB Assembly Team

Get expert responses within 24 hours

Whether you need a quick quote, technical support, or guidance on your electronics assembly project, our team is ready to help streamline your production.

48-Hour Response Time
Engineering Support
NDA Protection

Multiple Ways to Connect with Us

Choose the communication channel that works best for you. Our dedicated team handles inquiries for PCB assembly quotes, engineering support, and turnkey manufacturing solutions.

Sales & RFQ

Submit your PCB assembly quote requests and discuss pricing, lead times, and volume capabilities for your production needs.

Quote Response: 6-12 hrs

Direct Phone Line

Speak directly with our team for urgent inquiries, project clarifications, or to discuss complex assembly requirements.

+86-0755-36309132
Office Hours: Mon-Fri 9AM-6PM CST

WhatsApp / WeChat

Connect instantly for quick questions, file sharing, or real-time updates on your PCBA orders and production status.

+86 13925415069
Instant Messaging Available

Ready to discuss your PCB assembly project with our experts?

Start Your Quote Request

Global Reach, Local Expertise

We serve electronics manufacturers worldwide with proven export experience and reliable international shipping partnerships to deliver your PCB assemblies on time.

Global shipping and logistics network

International B2B Electronics Assembly

Our PCBA manufacturing facility has established reliable logistics channels and export documentation processes to serve clients across major markets. We handle customs documentation, provide flexible shipping options, and ensure your assemblies arrive safely and on schedule.

North America (USA, Canada, Mexico)
Europe (UK, Germany, Netherlands)
Asia-Pacific (Japan, South Korea, Australia)
Middle East & Emerging Markets

Need international shipping for your PCB assemblies?

Discuss Your Shipping Requirements

Real Projects, Real Results

See how we've helped electronics companies like yours achieve faster time-to-market, better quality, and more reliable production through our comprehensive PCB assembly services.

Motor-Controller-Board
Industrial Control

Motor Controller Board

Challenge:

Client needed 500 units within 10 days for pilot production testing with strict quality requirements and mixed SMT/THT assembly.

Delivered
8 Days
Pass Rate
99.6%
Smart-Device-board
Consumer Electronics

Smart Device Mainboard

Challenge:

Complex BOM with 180+ components requiring turnkey sourcing, AOI inspection, and functional testing for 2,000 units monthly.

On-Time
100%
Defect Rate
<0.3%
RF-Communication-Module
R&D Prototype

RF Communication Module

Challenge:

Engineering team needed rapid prototype assembly with impedance-controlled PCB, BGA components, and X-ray inspection for 25 test units.

Turnaround
5 Days
First Pass
96%

Want to see how we can optimize your PCB assembly process?

Request Your Custom Quote

What Our Clients Say

Hear directly from procurement managers, engineers, and project leaders who trust us with their electronics assembly needs—from prototype to production.

The team provided transparent communication throughout our pilot run. They flagged potential component issues during BOM review and suggested cost-effective alternatives that saved us 15% without compromising quality. Delivery was on schedule.

JM
James Mitchell
Procurement Manager
USA Industrial IoT Pilot → Production

We needed a fast-turn prototype with mixed assembly and functional testing. The engineering support was excellent—they caught a potential DFM issue early and helped optimize pad layouts. Five-day turnaround with zero rework needed.

SC
Sarah Chen
Hardware Engineer
Canada Medical Devices Prototype

Consistent quality across six production runs totaling 12,000 units. Their process documentation and AOI reports give us confidence. When we needed to scale up with two weeks' notice, they adjusted capacity smoothly. Reliable partner.

MR
Michael Rodriguez
Project Manager
Germany Automation Volume Production

Join hundreds of satisfied clients who trust us with their PCBA projects.

Get Started with Your Project
Contact QueenEMS - Modules 6-10

Certified Quality You Can Trust

Our comprehensive certifications demonstrate proven compliance with international quality standards, ensuring every PCB assembly meets rigorous specifications for your industry.

Verified
Iso 19001 certicication
Iso 19001
Verified
ISO24001
ISO24001
Verified
UL CERTIFICATION
UL Certification
Verified
ROSH CERTIFICATION
ROHS Certification

Transparent Compliance & Traceability

All certifications are authentic, regularly audited, and traceable through official issuing bodies. We maintain complete documentation and welcome customer audits.

Verified authenticity: All certificate numbers are traceable and registered with certifying authorities
Annual audits: Regular third-party inspections ensure continuous compliance with quality standards
Factory audits welcome: We accommodate customer facility inspections and provide comprehensive documentation

Need specific compliance documentation for your project?

Request Certification Details

Frequently Asked Questions

Get quick answers about our quoting process, file requirements, and assembly capabilities. Don't see your question? Our team is ready to help.

What files do I need to provide for an accurate PCB assembly quote?

To generate a complete and accurate quote, we need the following documentation:

  • PCB files: Gerber files or PCB design files (Eagle, Altium, KiCad formats accepted)
  • Bill of Materials (BOM): Complete component list with manufacturer part numbers and quantities
  • Assembly drawing: Component placement diagram showing orientation and location
  • Production quantity: Target volumes (prototype, pilot run, or production quantities)
  • Lead time requirements: Target delivery date or urgency level
  • Testing requirements: AOI, X-ray, functional testing, or custom test procedures
  • Programming files: If microcontrollers or programmable devices need flashing

The more complete your documentation, the faster we can provide an accurate quote with minimal back-and-forth clarification.

Do you offer turnkey or partial turnkey PCB assembly services?

Yes, we support both turnkey and partial turnkey manufacturing to match your procurement preferences:

  • Full turnkey: We handle complete PCB fabrication and component sourcing based on your BOM, providing end-to-end assembly
  • Partial turnkey: You provide critical or long-lead components, and we source the remaining standard parts
  • Consigned assembly: You supply all components, and we focus purely on the assembly and testing services

Each approach has advantages depending on your component availability, budget control, and lead time requirements. Our team can help you choose the best model for your project.

How do you handle missing components or alternative parts in the BOM?

Component availability can impact production timelines, so we have a structured approach to BOM management:

  • Proactive notification: During engineering review, we flag any obsolete, high-lead-time, or unavailable components before quoting
  • Alternative sourcing: Our procurement team identifies suitable alternatives with equivalent specifications
  • Customer approval required: We never substitute components without explicit written approval—you maintain full control over design decisions
  • Form-fit-function analysis: When alternatives are necessary, we provide detailed comparison documentation

This ensures no surprises during production and maintains your design integrity throughout the manufacturing process.

What testing and inspection services do you provide?

Quality assurance is built into every stage of our assembly process. We offer comprehensive testing options:

  • Automated Optical Inspection (AOI): Detects component placement errors, polarity issues, and solder defects immediately after reflow
  • X-ray inspection: Critical for BGA, QFN, and hidden solder joint verification
  • In-Circuit Testing (ICT): Validates component values and identifies shorts, opens, or incorrect parts
  • Functional testing: Custom test fixtures to verify your board operates according to specifications
  • Programming services: Firmware loading for microcontrollers and programmable devices
  • Final QC inspection: Visual inspection and documentation before packaging

Testing requirements are customized based on your product complexity, volume, and quality standards. All test results are documented and provided with each shipment.

What are typical lead times and shipping options?

Lead times vary based on project complexity, quantity, and component availability:

  • Prototype builds (1-25 units): Typically 5-7 working days after component arrival and engineering approval
  • Pilot runs (25-500 units): Generally 7-12 working days depending on board complexity and testing requirements
  • Production volumes (500+ units): 10-15 working days, with options for expedited service
  • Shipping methods: We support DHL, FedEx, UPS express (3-5 days), air freight (5-7 days), and sea freight for large volumes

Rush service is available for urgent projects. We handle all export documentation and work with your preferred freight forwarder when needed.

Still have questions about your specific project requirements?

Ask Our Engineering Team

Tell Us About Your PCBA Project

Get a customized quote within 24 hours. Our team is ready to help you find the perfect solution for your needs

Email Us

[email protected]
Response within 12 hours

Call / WhatsApp

+86-0755-363091328
Mon - Sat, 9AM-6PM CST

Visit Our Factory

1-4/F Property Office Building, ZhengFeng North Road, Shenzhen, China. 518103

Visit Our Office

(Head Office)1/27, Soi Border 5, Bang Bon Tai,Bang Bon, Bangkok 10150,Thailand

📥 Download Full Catalog (PDF)

RFQ Preparation Checklist

Providing complete documentation upfront helps us deliver accurate quotes faster and reduces back-and-forth clarification. Here's what we need for optimal results.

Gerber Files / PCB Design Files

RS-274X format Gerber files or native design files (Altium, Eagle, KiCad). Include drill files and board outline layers for accurate fabrication quotes.

Bill of Materials (BOM)

Excel or CSV format with manufacturer part numbers, descriptions, reference designators, and quantities. Clear BOM structure prevents sourcing delays.

Assembly Drawing / Centroid File

Component placement diagram showing polarity, orientation, and location. Centroid/pick-and-place files speed up SMT programming for faster production setup.

Testing Requirements

Specify inspection methods (AOI, X-ray) and functional testing procedures. Include test specifications, pass/fail criteria, and any custom test fixture requirements.

Programming Files (If Applicable)

Firmware hex files or binary images for microcontrollers, FPGAs, or programmable devices. Include programming specifications and verification procedures.

BOM Template & RFQ Guide

Download our standardized BOM format and comprehensive RFQ preparation guide to ensure your documentation is complete and properly formatted.

Download Template (PDF)

Have your documentation ready? Submit your RFQ now for fast review.

Submit Your Quote Request

Streamlined Communication Process

We've optimized our quoting workflow to minimize delays and eliminate repetitive clarifications. Here's what to expect when you submit an RFQ.

1

Submit RFQ

Upload your PCB files, BOM, and project specifications through our quick form. You'll receive instant confirmation.

Immediate
2

Engineering Review

Our team performs DFM analysis, checks component availability, and identifies any potential manufacturing issues proactively.

2-6 hours
3

Quote & Clarification

Receive detailed pricing with clear itemization. If clarification is needed, we consolidate all questions into one comprehensive list.

6-12 hours
4

Confirm Build Plan

After approval, we provide a production timeline with key milestones and assign a project coordinator for your build.

1-2 hours

Faster Turnaround

Consolidated communication reduces quote time from days to hours by catching issues early.

No Surprises

Transparent timelines and proactive updates keep you informed at every stage of production.

Clear Communication

Single-point contact eliminates confusion and ensures consistent, professional responses.

Experience our efficient quoting process—submit your project today.

Start Your RFQ Now

Your Data is Protected

We understand your PCB designs and BOM information represent significant investment. Our data security protocols ensure your intellectual property remains confidential throughout the quoting and manufacturing process.

NDA Available Upon Request

We gladly sign Non-Disclosure Agreements before reviewing your confidential designs. Our standard NDA template covers:

  • Protection of technical specifications and designs
  • Confidentiality of BOM and component sourcing information
  • Restrictions on disclosure to third parties
  • Clear terms for document handling and destruction

Secure File Handling

All uploaded files are processed through encrypted channels and stored on access-controlled servers. Our security measures include:

  • SSL/TLS encryption for all file transfers
  • Role-based access limited to project team members
  • Automatic file purging after project completion
  • No sharing of customer data with external parties

File Upload Best Practices

To protect your intellectual property, avoid including sensitive company information directly in file names or embedding proprietary markings in PCB silkscreen layers. If your design includes confidential notes or internal documentation, consider redacting customer-specific identifiers before upload. We can work with anonymized reference designators during quoting if preferred.

Need an NDA or have questions about our security protocols?

Request NDA & Security Details