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2026 Top 10 HDI Factory in China

Introduction to HDI

High – Density Interconnect (HDI) technology is a significant advancement in the field of printed circuit boards (PCBs). HDI boards are characterized by finer lines and spaces, smaller vias, and higher connection densities compared to traditional PCBs. This technology enables the miniaturization of electronic devices, enhances electrical performance, and allows for more complex circuits to be integrated into a smaller space. With the continuous development of the electronics industry, especially in areas such as smartphones, tablets, wearables, and high – end servers, the demand for HDI PCBs is on the rise, driving the growth of HDI manufacturing factories in China. HDI

Top 10 HDI Factories in China

1. Shenzhen Uniwell Circuits Co., Ltd.

Shenzhen Uniwell Circuits Co., Ltd. is a leading professional PCB manufacturer in China, with a strong focus on HDI products. The company was established with a vision to provide high – quality, reliable, and cost – effective PCB solutions to global customers. It has a modern production base equipped with advanced manufacturing equipment and a team of experienced engineers and technicians. Uniwell is committed to strict quality control and continuous technological innovation.

Features in HDI:

  • It can produce HDI boards with high – layer counts, up to 20 layers, which meet the complex circuit requirements of advanced electronic products.
  • The company has expertise in processing fine lines and spaces, with a minimum line/space width of 3 mil/3 mil, ensuring high – density interconnection.
  • It offers a full range of HDI processes, including blind and buried vias, laser drilling, and sequential lamination, providing flexibility for different product designs.

Advantages:

  • Competitive pricing without sacrificing quality, which makes it attractive to customers with large – scale production needs.
  • Short lead times, able to meet urgent delivery requirements, which is crucial in the fast – paced electronics industry.
  • Strong R & D capabilities, constantly investing in new technologies to keep up with the industry’s development trends.
    Website: https://www.uniwellcircuits.net/

2. Kingboard Holdings Limited

Kingboard is a well – known multinational group with extensive operations in the PCB industry. It has a long – standing history and a solid reputation. The company has multiple production bases in China, which are equipped with state – of – the – art manufacturing facilities. Kingboard focuses on both domestic and international markets, supplying HDI PCBs to a wide range of industries, including telecommunications, consumer electronics, and automotive.

Features in HDI:

  • It is capable of producing high – precision HDI boards with a high aspect ratio of vias, which is important for signal transmission in high – frequency applications.
  • Kingboard has established a complete supply chain for HDI production, from raw material procurement to final product testing, ensuring consistent quality.
  • The company offers customization services for HDI products, tailoring the designs according to customers’ specific requirements.

Advantages:

  • With a large production scale, it can achieve economies of scale, resulting in lower production costs.
  • A comprehensive quality management system that meets international standards, such as ISO 9001 and IPC standards, which gives customers confidence in the product quality.
  • Strong technical support and after – sales service, providing timely assistance to customers during the product development and use process.

3. Unimicron Technology Corporation

Unimicron is a global leader in the PCB industry, well – recognized for its high – end HDI products. The company has advanced R & D facilities and a team of top – notch engineers. It has a deep understanding of the latest trends in the electronics industry and is committed to developing cutting – edge HDI technologies.

Features in HDI:

  • Specializes in producing HDI boards for high – end smartphones and other high – performance electronic devices, with excellent signal integrity and heat dissipation performance.
  • Unimicron has developed unique manufacturing processes for micro – vias and embedded components, enabling more compact and powerful circuit designs.
  • It is at the forefront of environmental protection in HDI production, using environmentally friendly materials and processes.

Advantages:

  • High – end technology leadership, often being the first to introduce new HDI technologies to the market, which helps customers gain a competitive edge.
  • A global sales and service network, providing convenient and efficient support to customers around the world.
  • Strong cooperation with major electronics manufacturers, which allows it to stay in sync with the latest product development requirements.

4. Nanya PCB Corporation

Nanya PCB is a prominent player in the HDI manufacturing field. It has a large – scale production base in China and a high – degree of automation in its production lines. The company has a long – term focus on technology improvement and quality control.

Features in HDI:

  • Can produce HDI boards with high – speed and high – frequency performance, meeting the requirements of modern communication and data processing systems.
  • Nanya PCB has a strong R & D team dedicated to improving HDI board reliability, through measures such as better via filling and copper plating.
  • It offers a variety of surface finish options for HDI boards, such as ENIG, OS, and HASL, to meet different customer needs.

Advantages:

  • High production efficiency due to the high – degree of automation, which helps reduce production costs and shorten lead times.
  • A strong quality control system, with multiple inspection steps throughout the production process to ensure product quality.
  • Good cost – performance ratio, providing high – quality HDI products at a reasonable price.

5. TTM Technologies, Inc. (China Operations)

TTM is a global PCB manufacturer with significant operations in China. It has a reputation for high – quality HDI products and innovative solutions. The company combines global expertise with local advantages in China to serve the Asian market effectively.

Features in HDI:

  • Specializes in HDI boards for aerospace, defense, and medical electronic equipment, with strict compliance with relevant industry standards.
  • TTM has advanced design and manufacturing capabilities for HDI multi – layer boards, with precise control of layer alignment and impedance matching.
  • The company is actively involved in the development of new HDI materials, aiming to improve the performance and reliability of its products.

Advantages:

  • Global experience and local adaptability, which enables it to understand and meet the diverse needs of different customers.
  • Strong R & D and design capabilities, able to provide customized HDI solutions for complex applications.
  • Good customer service, with a professional team dedicated to responding to customers’ inquiries and solving problems in a timely manner.

6. Ibiden Co., Ltd. (China Factories)

Ibiden is a well – established Japanese company with a significant presence in the Chinese HDI market. It has a long – standing tradition of high – quality manufacturing and technological innovation. The Chinese factories of Ibiden are equipped with advanced manufacturing technology and strict quality control systems.

Features in HDI:

  • Known for its high – reliability HDI boards, especially for automotive electronics, where safety and stability are of utmost importance.
  • Ibiden has unique technologies for micro – structure formation on HDI boards, which can improve the overall performance of electronic devices.
  • The company focuses on energy – saving and environmental – friendly production processes in its HDI manufacturing.

Advantages:

  • High – quality brand image, which gives customers confidence in the long – term reliability of its HDI products.
  • Rich experience in serving the automotive industry, understanding the strict requirements and standards of this sector.
  • Continuous investment in R & D, ensuring that its products remain at the forefront of technological development.

7. AT&S Austria Technologie & Systemtechnik AG (China Branches)

AT&S is a leading European PCB manufacturer with branches in China. It is recognized for its high – end HDI solutions for high – tech industries. The company combines European design and engineering expertise with Chinese manufacturing capabilities.

Features in HDI:

  • Specializes in HDI boards for 5G communication infrastructure, with excellent high – frequency and high – speed performance.
  • AT&S has advanced laser drilling and embedding technologies, which enable the production of extremely dense and complex HDI circuits.
  • The company offers a high – level of customization for HDI products, working closely with customers from the design stage to the final production.

Advantages:

  • Europe – level technological standards, providing high – end HDI solutions that meet the most demanding requirements.
  • Strong R & D and innovation capabilities, constantly exploring new technologies and applications for HDI.
  • Good cooperation with global high – tech companies, which helps it stay updated with the latest industry trends.

8. SEMCO, Inc. (China Production Facilities)

SEMCO is a well – respected PCB manufacturer in the Asian market. Its China production facilities are equipped with up – to – date manufacturing equipment and a well – trained workforce. The company focuses on providing cost – effective HDI solutions.

Features in HDI:

  • Can produce HDI boards with a high level of integration, suitable for small – sized and high – performance electronic devices.
  • SEMCO has optimized its manufacturing processes to reduce waste and improve production efficiency in HDI production.
  • It offers quick – turn HDI services, which is very beneficial for customers with urgent project requirements.

Advantages:

  • Cost – effectiveness, providing good – quality HDI products at relatively low prices, which is attractive to price – sensitive customers.
  • Fast response and delivery, able to meet tight schedule requirements.
  • A flexible production model, which can accommodate both small – batch and large – scale production.

9. CMK Corporation (China Plants)

CMK is a Japanese company with plants in China, focusing on the production of high – quality HDI PCBs. It has a long history of technological development in the PCB field and is committed to providing reliable products.

Features in HDI:

  • Known for its high – precision HDI boards with excellent dimensional stability, which is crucial for the assembly of electronic components.
  • CMK has developed advanced surface treatment technologies for HDI boards, improving the corrosion resistance and solderability of the circuits.
  • The company offers a wide range of HDI board thickness options, from ultra – thin to thick boards, to meet different application needs.

Advantages:

  • High – precision manufacturing capabilities, ensuring the accuracy and quality of HDI products.
  • Strong R & D in surface treatment technology, which gives its products an edge in terms of durability.
  • A stable supply chain, ensuring a consistent supply of high – quality HDI boards to customers.

10. Taisol Electronics Corporation (China Divisions)

Taisol is a well – known PCB manufacturer in Asia, with significant operations in China. It has a diversified product portfolio that includes various types of HDI PCBs.

Features in HDI:

  • Capable of producing HDI boards for industrial control systems, with high reliability and anti – interference performance.
  • Taisol has a comprehensive quality testing system for HDI products, ensuring that each board meets strict quality standards.
  • The company is actively promoting the use of intelligent manufacturing technologies in its HDI production, improving production efficiency and product quality.

Advantages:

  • Strong adaptability to different industrial applications, providing customized HDI solutions for specific industries.
  • Comprehensive quality control, reducing the risk of product failures.
  • Embracing intelligent manufacturing, which allows for more efficient and flexible production processes.

HDI In conclusion, these ten HDI factories in China represent the leading forces in the HDI manufacturing industry. They have their own unique features and advantages, and are continuously driving the development of HDI technology through innovation and quality improvement. As the demand for HDI PCBs continues to grow, these factories will play an increasingly important role in the global electronics supply chain.