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PCB assembly factories for you, based in Shijiazhuang and Shenzhen.

Introduction to PCB assembly

Printed Circuit Board (PCB) assembly is the process of soldering electronic components onto a PCB to create a functional electronic device. The PCB serves as the foundation for the electronic components, providing electrical connections and mechanical support. PCB assembly is a crucial step in the manufacturing of electronic products, from consumer electronics to industrial equipment.

The PCB Assembly Process

The PCB assembly process typically involves the following steps:

  1. Solder Paste Application: Solder paste, a mixture of tiny solder particles and flux, is applied to the PCB’s pads using a stencil or screen printing process.

  2. Component Placement: Surface Mount Technology (SMT) components are placed onto the solder paste using a pick-and-place machine, while Through-Hole Technology (THT) components are inserted manually or with automatic insertion machines.

  3. Reflow Soldering: The PCB with components is heated in a reflow oven, melting the solder paste and creating a permanent connection between the components and the PCB.

  4. Inspection and Testing: The assembled PCB undergoes visual inspection and electrical testing to ensure proper functionality and quality.

Types of PCB Assembly

There are two main types of PCB assembly:

  1. Surface Mount Technology (SMT) Assembly: SMT components are mounted directly onto the surface of the PCB. This method allows for higher component density and faster assembly speeds compared to THT.

  2. Through-Hole Technology (THT) Assembly: THT components have leads that are inserted through holes in the PCB and soldered on the opposite side. This method is more robust and reliable but requires more manual labor and has lower component density compared to SMT.

PCB Assembly Factories in Shijiazhuang and Shenzhen

China is a global hub for PCB assembly, with numerous factories located in various cities. Two notable locations for PCB assembly are Shijiazhuang and Shenzhen.

Shijiazhuang PCB Assembly Factories

Shijiazhuang, the capital city of Hebei Province, is home to several PCB assembly factories:

  1. Shijiazhuang Kingtronics Co., Ltd.: Kingtronics specializes in SMT and THT PCB assembly, offering services for prototypes and low to medium volume production.

  2. Shijiazhuang Zhouming Electronics Co., Ltd.: Zhouming Electronics provides PCB assembly services, including SMT, THT, and mixed assembly, for a wide range of industries.

  3. Shijiazhuang Zhonghang Electronic Technology Co., Ltd.: Zhonghang Electronic Technology offers PCB assembly services, focusing on SMT assembly for consumer electronics and industrial applications.

Shenzhen PCB Assembly Factories

Shenzhen, a major city in Guangdong Province, is known as China’s “Silicon Valley” and is home to numerous PCB assembly factories:

  1. Shenzhen Kaiyada Electronic Co., Ltd.: Kaiyada Electronic provides PCB assembly services, including SMT, THT, and mixed assembly, for a wide range of industries, from consumer electronics to medical devices.

  2. Shenzhen Sunsoar Tech Co., Ltd.: Sunsoar Tech specializes in SMT PCB assembly, offering services for prototypes and low to high volume production.

  3. Shenzhen Haisen Electronics Co., Ltd.: Haisen Electronics offers PCB assembly services, focusing on SMT assembly for consumer electronics, industrial applications, and IoT devices.

Choosing the Right PCB Assembly Factory

When selecting a PCB assembly factory, consider the following factors:

  1. Manufacturing Capabilities: Ensure that the factory has the necessary equipment and expertise to handle your specific PCB assembly requirements, such as SMT, THT, or mixed assembly.

  2. Quality Control: Inquire about the factory’s quality control processes, certifications (e.g., ISO 9001, IPC standards), and testing capabilities to ensure that your PCBs meet the required quality standards.

  3. Production Capacity: Assess the factory’s production capacity and lead times to determine if they can meet your volume requirements and delivery schedules.

  4. Communication and Support: Evaluate the factory’s communication channels, responsiveness, and technical support to ensure smooth collaboration throughout the project.

  5. Cost and Value: Compare pricing and services offered by different factories to find the best balance between cost and value for your specific needs.

Factor Shijiazhuang Factories Shenzhen Factories
Manufacturing Capabilities SMT, THT, mixed assembly SMT, THT, mixed assembly
Quality Control ISO 9001, IPC standards ISO 9001, IPC standards
Production Capacity Low to medium volume Low to high volume
Communication and Support Varies by factory Varies by factory
Cost and Value Competitive pricing Competitive pricing

Benefits of Working with PCB Assembly Factories in Shijiazhuang and Shenzhen

Working with PCB assembly factories in Shijiazhuang and Shenzhen offers several advantages:

  1. Cost-Effectiveness: Chinese PCB assembly factories generally offer competitive pricing due to lower labor costs and a well-established electronics manufacturing ecosystem.

  2. Expertise and Experience: Many factories in Shijiazhuang and Shenzhen have years of experience in PCB assembly and are well-versed in the latest manufacturing technologies and processes.

  3. Scalability: These factories are capable of handling a wide range of production volumes, from prototypes to mass production, allowing for flexibility in your manufacturing needs.

  4. Access to Supply Chain: Shijiazhuang and Shenzhen have well-developed electronics supply chains, ensuring easy access to components and materials for your PCB assembly projects.

Challenges and Considerations

While working with PCB assembly factories in Shijiazhuang and Shenzhen has its benefits, there are also some challenges and considerations to keep in mind:

  1. Language and Cultural Barriers: Communication may be challenging due to language and cultural differences. It is essential to establish clear communication channels and protocols to minimize misunderstandings.

  2. Intellectual Property Protection: Ensure that your intellectual property is adequately protected when working with overseas factories. Implement non-disclosure agreements (NDAs) and other legal measures to safeguard your designs and proprietary information.

  3. Quality Control: While many factories have robust quality control processes, it is crucial to regularly monitor and audit the manufacturing process to ensure consistent quality and adherence to your specifications.

  4. Logistics and Shipping: Consider the logistics and shipping arrangements when working with overseas factories. Factor in lead times, customs clearance, and shipping costs when planning your production schedule.

Frequently Asked Questions (FAQ)

  1. Q: What is the minimum order quantity (MOQ) for PCB assembly at these factories?
    A: MOQs vary by factory, but many factories in Shijiazhuang and Shenzhen offer low MOQs for prototypes and small-batch production. It is best to inquire directly with the factory for their specific MOQ requirements.

  2. Q: How long does it typically take for PCB assembly at these factories?
    A: Lead times depend on factors such as the complexity of the PCB, the volume of the order, and the factory’s current workload. Generally, lead times range from a few days for prototypes to several weeks for larger production runs.

  3. Q: Can these factories source components for my PCB assembly project?
    A: Most PCB assembly factories in Shijiazhuang and Shenzhen offer component sourcing services. They can procure components on your behalf, leveraging their relationships with suppliers to secure competitive pricing and ensure timely delivery.

  4. Q: Do these factories provide PCB design services as well?
    A: Some factories may offer PCB design services or have partnerships with PCB design houses. However, it is more common for customers to provide their own PCB designs, and the factory focuses on the assembly process.

  5. Q: How can I ensure the quality of the PCBs assembled at these factories?
    A: To ensure quality, thoroughly vet the factory’s quality control processes, certifications, and testing capabilities before engaging their services. Regularly communicate your quality requirements and expectations, and consider implementing your own quality assurance measures, such as inspections or third-party testing.


PCB assembly factories in Shijiazhuang and Shenzhen offer a range of services and capabilities to meet your electronic manufacturing needs. By carefully evaluating factors such as manufacturing capabilities, quality control, production capacity, communication, and cost, you can select the most suitable factory for your PCB assembly project.

Engaging with these factories can provide cost-effective solutions, access to expertise and experience, and scalability for your production requirements. However, it is essential to address potential challenges such as language barriers, intellectual property protection, quality control, and logistics to ensure a successful collaboration.

By understanding the PCB assembly process, the capabilities of factories in Shijiazhuang and Shenzhen, and the key considerations when working with them, you can make informed decisions and establish a strong partnership for your PCB assembly needs.