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Established in 2010, Cojoin Circuits is a professional manufacturer of high-reliability PCBs and PCBA services in China. We deliver integrated circuit board solutions for R&D, production, and global sales.
A trusted partner in PCB and PCBA manufacturing, delivering high-reliability solutions worldwide since 2010.
Cojoin Circuits focuses on high-reliability products to become a high-speed developing and high-tech enterprise. As a service-leading PCB manufacturing and assembly partner, we are committed to excellence in every board we produce.
We serve customers globally with rigid, flex, and rigid-flex PCBs, fulfilling all assembly needs with precision and speed.
Certified with UL/CUL, ISO9001:2015, ISO14001:2015, and IATF16949:2016 for consistent quality and environmental responsibility.
Serving clients across domestic and international markets with reliable delivery and responsive support.
From HDI to Flex-Rigid, we support complex designs with cutting-edge manufacturing technology.
Comprehensive range of high-performance PCBs tailored for diverse industrial and commercial applications.
Reliable two-layer boards ideal for moderate complexity circuits with through-hole and surface mount components.
High-density interconnects with 4 to 20+ layers for advanced electronics requiring signal integrity and power management.
Aluminum or copper base PCBs for superior thermal management in high-power LED and power electronics.
Designed for radio frequency applications with controlled impedance and low signal loss characteristics.
High-Density Interconnect boards with microvias for compact, high-performance consumer and medical devices.
Bendable circuits using polyimide substrates for space-constrained and dynamic flexing applications.
Hybrid construction combining rigid and flexible layers for 3D packaging and reliability in harsh environments.
Tailored designs and materials to meet unique project requirements and industry-specific standards.
Full-service PCBA with advanced manufacturing and testing capabilities.
Cojoin Circuits is certified with UL/CUL, ISO9001:2015, ISO14001:2015, and IATF16949:2016, ensuring high standards in quality, environmental management, and automotive production.
Standard lead time is 5–7 days for prototypes and 10–15 days for mass production. Quick-turn options are available upon request.
Yes, we provide free Design for Manufacturability (DFM) analysis to optimize your design for production efficiency and reliability.
Absolutely. We support prototype, small batch, and high-volume production with the same commitment to quality and service.
Ready to start your next project? Contact us today for a quote or technical consultation.
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