Email Us
China Turn key PCB Assembly

China Turn key PCB Assembly

china turnkey pcb electronics
china turnkey pcb assembly
china turn key pcb assembly

GreensTone has over 10 years of experience in the China turnkey PCB assembly industry. Our core values are centered around customer service, engineering, manufacturing, and product solutions. In the beginning, we gained a stellar reputation through China turnkey PCB electronics assembly services and our customers pushed us to help them find solutions for PCB Fabrication, Components, Interconnect, Cables, Packaging Systems, and Mechanical parts in plastic or metal. Our expansion into these areas has allowed us to provide our customers with a wide range of engineering and manufacturing capabilities. Our core business is PCB assembly!

China Turnkey PCB Assembly Quality Control Process

  • Assembly manual instruction

    The PCBA engineer of prototype pcb assembly supplier GreensTone make the assembly manual instruction to norm the manufacturing process in advance, guide the production, and improve the quality from the process technology

  • IQC Incoming Quality Control

    Check all the components values, pads size, brands, manufacturing date and code 

  • SPI Solder Paste Inspection

    Solder paste inspection can check the solder paste is sufficient and uniform to prevent assembly quality problems in advance caused by poor solder paste soldering

  • Online AOI Inspection

    The AOI can check the short circuit, offset, wrong solder, reverse solder, false solder, empty solder, incomplete solder, etc. It also can check excessive solder, less solder, continuous solder and solder joints.

  • First sample confirm

    Check the first China turnkey pcb electronics sample with Gerber, BOM and coordinate files, test it's function with the testing program. Only sample confirmed by PCBA engineer, it can go for mass production.

  • Off-line AOI inspection

    Check the soldered surface mount assembly for errors, omissions, and false connections.

  • X-Ray welding inspection

    Inspect the solder joints of invisible components like BGA.

  • QC manual inspection

    The assembled board is visually inspected to ensure 100 % ok.

Specification of China Turnkey PCB Electronics Assembly

Item name

China Turn key PCB Assembly Capability

PCB Type

Rigid PCB

PCB Shape

Rectangular, Circular and any Odd Shapes

PCB Dimension

Min Board Size: 50mm x 100mm (Boards smaller than this size need to be panelized)

Max Board Size: 250mm x 500mm

Types of solder

leaded and lead-free (RoHS Compliant) assembly

Components Size

Passive Component: components as small as 01005, 0201,0402.

BGA:  handle BGA of 0.25mm pitch with X-ray testing.

Fine Pitch to 0.25mm

UBGA, QFN, POP, leadless chips, connectors and terminals.

Components package

in Reels, Cut Tape, Tube & Tray, Loose Parts and Bulk.

Components Source

Turn-key/partial turn-key


laser cut stainless steel stencils



China Turnkey PCB Assembly Cases in GreensTone

turn key pcb assembly
turnkey pcb assembly
full turnkey pcb
pcb turnkey solutions
turn key assembly
turnkey assembly
turnkey assembly services
turnkey pcb
turnkey pcb assembly services
turnkey pcb electronics
turnkey pcb manufacturing
turnkey pcb manufacturing 2
turnkey pcb electronics 2

Yes, thanks for your update on the projects status,it’s good for me to make our order plan.

—— Pablo from Spain June 20th, 2019.

Your engineer check the files very carefully,thank you for it, it helps me a lot.

—— Mark from a leading LED strips supplier in Australia Match,8th 2018.

The goods arrived very well, the packing is good, thank you.

—— Antonio from Valladolid, Spain May 25th, 2017.

We've been worked with GreensTone for many years, there is no failure.

—— Wally Nunn from Australia---a leading Pool products manufacturer July13th, 2016.

I reached out to GreensTone Electronics to manufacture the circuit boards. After a few discussions, Rebecca could see the community focus of the project and went above and beyond to reduce costs, ensure delivery and filmed elements of the production for educational purposes. Manufacturing offshore isn't as easy as it appears on the surface so it was invaluable to have Rebecca believe in the cause and be an ally in the production working toward the same goal.

—— Mic. from Australia Feb. 10th, 2015, written on his Facebook.

Yes, thank you we received the 34x LC VMS TILE 1C REV A earlier this week. The assembly quality is very good.

—— Ruth from Australia April 9th, 2014.

Thank you for taking time to check it,you are very efficient.

—— Peter Astrom from Sweden Sep 8th, 2013.

Your engineer is very clever,thanks for the help to check the file's problem.

—— Tony from Australia July 21st, 2012.
Get in Touch With GreensTone
Start your contract manufacturing journey with GreensTone today. Simply fill out your details and we'll get in touch with you to discuss your manufacturing needs.
Contact Us

Full Turnkey&Partial Turnkey PCBA

When it comes to printed circuit board assembly (PCBA), choosing the right approach can significantly impact the success of your project. Two commonly used strategies are Full Turnkey and Partial Turnkey PCBA services. In this guide, we will delve into the differences between these two options and provide insights to help you make an informed decision for your specific needs.

Full Turnkey PCBA

Full Turnkey PCBA is a comprehensive service where the pcb assembly suppliers takes complete responsibility for the entire assembly process, from sourcing components to the final product's delivery. This approach offers several advantages:

Single-Point Responsibility: With Full Turnkey, you only need to communicate with one supplier. They manage everything from procurement to assembly, streamlining the process and reducing potential communication gaps.

Expertise in Sourcing: PCB assembly providers specializing in Full Turnkey services have established relationships with component suppliers and can often secure components at better prices and lead times.

Quality Control: Full Turnkey services often include rigorous quality control processes, ensuring that each component meets the required standards, thus minimizing the risk of defects.

Time Efficiency: Since the PCB assembly provider handles every aspect, Full Turnkey can be faster, especially when dealing with complex projects or tight deadlines.

Reduced Administrative Burden: By outsourcing the procurement and assembly process, you free up internal resources and reduce administrative overhead.

Partial Turnkey PCBA

Partial Turnkey PCBA, on the other hand, is a hybrid approach where you and the assembly provider share responsibilities. In this scenario:

You Provide Some Components: In Partial Turnkey, you supply some or all of the critical components, such as specialized chips or proprietary parts, while the assembly provider procures the remaining standard components.

Shared Responsibility: You and the assembly provider work together to define the scope of responsibilities. Typically, the assembly provider handles PCB fabrication, assembly, and testing, while you manage component procurement.

Flexibility: Partial Turnkey allows you to have more control over component selection and sourcing, especially when you have specific requirements or existing component stock.

Cost Control: Since you provide some components, you have a better understanding of their costs and can potentially save money on components you already have in-house.

Customization: This approach is suitable for projects with unique component requirements or those where you want to maintain control over certain aspects of the assembly process.

Choosing Between Full Turnkey and Partial Turnkey PCBA

To make an informed decision between Full Turnkey and Partial Turnkey PCBA, you should consider several factors:

Project Complexity: For simple, straightforward projects with readily available components, Partial Turnkey might be sufficient. However, complex projects with specialized or hard-to-source components often benefit from Full Turnkey services.

Component Sourcing: Evaluate your ability to source components efficiently. If you have established supply chains or proprietary components, Partial Turnkey might be more suitable. Otherwise, Full Turnkey can simplify the procurement process.

Time Constraints: Full Turnkey services are generally faster due to the assembly provider's expertise and streamlined processes. If your project has tight deadlines, this might be a crucial factor.

Quality Requirements: If your project demands rigorous quality control and assurance, Full Turnkey services are more likely to meet these standards since the assembly provider assumes full responsibility for component quality.

Budget Constraints: Consider your budget carefully. Full Turnkey services might have a higher upfront cost but can potentially save you money in the long run by reducing the risk of errors and rework.

Control and Customization: If you value control over component selection or have unique requirements, Partial Turnkey allows you to maintain a higher degree of control.

Communication and Collaboration: Assess your team's ability to collaborate effectively with the assembly provider. Full Turnkey minimizes communication complexity, while Partial Turnkey requires more coordination.

Turnkey PCB Assembly Testing

The success of any electronic product hinges on the quality and reliability of its printed circuit board assembly (PCBA). To achieve this, thorough testing of the PCB is paramount. In this guide, we will explore the importance of Turnkey PCB Assembly Testing, the different testing methods available, and best practices to ensure the highest quality and reliability for your electronic devices.

Why Turnkey PCB Assembly Testing Matters

Turnkey PCB Assembly Testing refers to the comprehensive evaluation of the assembled PCB to ensure that it functions correctly and meets the specified performance criteria. This testing process plays a pivotal role in product quality and reliability for several reasons:

Defect Detection: Testing helps identify manufacturing defects such as soldering issues, short circuits, or open connections. Detecting these problems early in the production process prevents costly rework or product failures in the field.

Functional Verification: Beyond identifying defects, testing validates that the PCB functions as intended. This ensures that the end product will meet its performance requirements and function reliably in real-world scenarios.

Reliability Assurance: Rigorous testing minimizes the risk of early product failures, reducing warranty claims and improving overall customer satisfaction. A reliable product enhances your brand's reputation.

Compliance with Standards: Many industries have specific quality and safety standards that must be met. Turnkey PCB Assembly Testing ensures that your product complies with these standards, preventing regulatory issues and potential liability.

Cost Savings: While testing adds an upfront cost to the manufacturing process, it can save you substantial money in the long run by reducing scrap, rework, and warranty-related expenses.

Types of Turnkey PCB Assembly Testing

There are several testing methods available to assess PCBAs. The choice of testing method(s) depends on your project's requirements, complexity, and budget. Here are some common types of Turnkey PCB Assembly Testing:

Visual Inspection: This is the most basic form of testing, involving a visual examination of the PCB for obvious defects such as soldering errors, component placement issues, or physical damage. While not comprehensive, visual inspection provides a quick initial assessment.

Automated Optical Inspection (AOI): AOI systems use cameras and image processing software to examine the PCB's surface for defects. It can detect issues such as missing components, misalignment, or solder joint problems with high accuracy and speed.

In-Circuit Testing (ICT): ICT involves testing the PCB's electrical properties by probing specific points on the circuit. It checks for electrical connectivity, shorts, opens, and component value discrepancies. ICT is effective for complex PCBAs with many components.

Functional Testing: Functional testing evaluates the PCB's performance in real-world conditions. It involves applying a set of test inputs and monitoring the outputs to ensure the PCB functions as intended. Functional tests verify the device's overall functionality.

Boundary Scan Testing: This method utilizes a set of standardized test logic that is embedded in the integrated circuits (ICs) on the PCB. It's particularly useful for testing complex PCBs with many digital components, providing a way to test interconnections and verify component functionality.

Environmental Testing: Environmental testing involves subjecting the PCB to extreme conditions such as temperature variations, humidity, or vibration to assess its resilience and reliability under adverse circumstances. This type of testing is essential for applications with stringent environmental requirements, like aerospace or automotive electronics.

Best Practices for Turnkey PCB Assembly Testing

To ensure the highest quality and reliability of your PCBAs, consider these best practices when implementing Turnkey PCB Assembly Testing:

Early Testing: Begin testing as early as possible in the assembly process. This allows for immediate identification and rectification of defects, reducing rework costs and improving overall efficiency.

Comprehensive Testing: Utilize a combination of testing methods. While visual inspection and AOI can catch surface defects, in-circuit testing and functional testing provide deeper insights into electrical performance.

Test Fixtures and Jigs: Develop appropriate test fixtures and jigs to facilitate testing. Well-designed fixtures ensure consistent and repeatable results.

Test Coverage Analysis: Determine the critical components and functionalities that require testing. Not every component may need exhaustive testing, so focus your efforts where they matter most to save time and resources.

Documentation and Traceability: Maintain thorough records of the testing process, including test results, equipment calibration, and any rework or repairs. This documentation is invaluable for quality control and audits.

Regular Calibration: Ensure that testing equipment is regularly calibrated to maintain accuracy. Inaccurate equipment can lead to false results and compromise product quality.

Feedback Loop: Establish a feedback loop between the testing process and the production line. Any issues detected during testing should trigger immediate corrective actions.

Training and Expertise: Invest in training for your testing personnel. Skilled operators are more likely to identify subtle defects and ensure accurate testing.

Continuous Improvement: Periodically review your testing processes and equipment to identify opportunities for optimization and cost reduction.

Benefits of Turnkey PCB Assembly Services

In the dynamic world of electronics manufacturing, efficiency, reliability, and cost-effectiveness are paramount. Turnkey PCB assembly services have emerged as a compelling solution for companies seeking streamlined and hassle-free PCB manufacturing. In this guide, we will explore the numerous benefits of utilizing Turnkey PCB assembly services, shedding light on why they are an increasingly popular choice for manufacturers worldwide.

1. Single-Point Responsibility

One of the primary advantages of Turnkey PCB assembly services is the concept of single-point responsibility. When you opt for Turnkey services, you entrust the entire PCB assembly process to a specialized provider. This means that the responsibility for every aspect of the project, from sourcing components to final assembly and testing, rests on the shoulders of the Turnkey service provider. This streamlined approach simplifies project management, reduces communication complexity, and minimizes the potential for misunderstandings between multiple suppliers.

2. Expert Component Sourcing

Efficient component sourcing is a critical aspect of any PCB assembly project. Turnkey service providers often have established relationships with component suppliers, both domestic and international. These relationships enable themto secure components at competitive prices and with shorter lead times. With their extensive industry knowledge and connections, Turnkey service providers can navigate the complexities of the global component market, ensuring a reliable and timely supply of parts for your project. This expertise in component sourcing is particularly beneficial for projects with tight schedules or specialized component requirements.

3. Reduced Administrative Burden

Managing the procurement of components, coordinating with multiple suppliers, and overseeing the assembly process can be administratively burdensome. Turnkey PCB assembly services alleviate this load by handling all procurement and assembly-related tasks. This allows your team to focus on other critical aspects of your project, such as design, testing, or marketing, ultimately improving your operational efficiency.

4. Quality Control and Assurance

Quality control is of utmost importance in electronics manufacturing, and Turnkey PCB assembly services prioritize this aspect. These services often include stringent quality control processes throughout the assembly process. From component inspection to soldering quality checks, every step is meticulously monitored to ensure that the final PCB meets the required standards. By entrusting your project to a reputable Turnkey service provider, you benefit from their experience in maintaining high-quality production processes and minimizing the risk of defects or failures.

5. Time Efficiency

Time-to-market is a critical factor in the electronics industry. Turnkey PCB assembly services are renowned for their time efficiency. These providers specialize in PCB assembly, and their streamlined processes and well-defined workflows enable them to complete projects quickly. Whether you have a tight deadline or need to respond swiftly to market demands, Turnkey services can significantly reduce the lead time associated with PCB assembly compared to managing multiple suppliers individually.

6. Cost Savings

While it may seem that Turnkey services come with added costs due to the convenience they offer, they can actually lead to cost savings in various ways. Firstly, Turnkey service providers' expertise in component sourcing often results in cost-effective procurement, as they can negotiate favorable terms with suppliers. Additionally, their rigorous quality control processes minimize the risk of defective products, reducing costly rework or warranty claims down the line. Over time, these cost-saving benefits can outweigh the initial investment in Turnkey services.

7. Scalability and Flexibility

Turnkey PCB assembly services are adaptable to the changing needs of your project. Whether you're working on a small prototype run or a large-scale production batch, Turnkey service providers can accommodate your requirements. This scalability ensures that you have the capacity to meet market demands without the complexities of managing different suppliers or assembly lines. Furthermore, if your project requires design changes or component substitutions, Turnkey providers can swiftly adapt to these modifications, ensuring a smooth production process.

8. Access to Advanced Technology and Equipment

PCB assembly technology is continuously evolving, with new equipment and techniques emerging regularly. Turnkey service providers invest in state-of-the-art machinery and stay updated on the latest industry trends. By partnering with these providers, you gain access to cutting-edge technology and expertise that may not be feasible to maintain in-house. This access to advanced equipment can lead to improved product quality and performance.

9. Risk Mitigation

Electronics manufacturing involves inherent risks, such as component shortages, manufacturing errors, or supply chain disruptions. Turnkey PCB assembly services are well-equipped to mitigate these risks. They often maintain safety stock of critical components, have backup suppliers in place, and employ risk management strategies to ensure project continuity even in challenging situations. By leveraging their expertise and resources, you reduce the vulnerability of your project to unforeseen disruptions.

4F B5 XuJingChang Industry Zone HaoYe Rd. No.39, XinHe Street, FuYong District, Shenzhen, China