What this manufacturer makes
Cojoin Circuits manufactures printed circuit boards in Dongguan. Its official company profile dates the business to 2010 and describes rigid boards, flexible circuits, rigid-flex, HDI and embedded-component technologies. The rigid-flex product family combines a rigid component-mounting region with flexible interconnections. That family description does not set a universal bend radius or layer structure. Buyers should supply the rigid and flexible stack-ups separately, including transition geometry and assembly conditions, when requesting engineering review.
Official company source reviewed- Manufacturing focus
- Rigid-flex circuits · HDI PCBs · Embedded-component technology
- Published footprint
- Guangdong
- Listing and account
- Independently researched · factory account not claimed
Rigid-flex circuit manufacturing
Manufacturer reportedRigid-flex product-family disclosure. Bend radius, cycle life and layer arrangement are not inferred from the catalogue image.
- Layer count
- Layer range not disclosed
- Line / space
- Not disclosed for this profile
- Finished hole
- Not confirmed
- Impedance
- Not disclosed for this profile
| Construction | Combined rigid and flexible circuit regions |
|---|---|
| Product family | Rigid-flex printed circuit board |
| Drawing inputs | Rigid/flex stack-ups, transition and bend requirements |
| Technical source | cojoin.com.cn · Manufacturer specification |
These are separate published limits, not a promise that every combination is manufacturable. Unknown values are excluded from numerical filtering.
Open capability sheet →Know what has been checked.
The website review establishes the source of a statement. Independent UL ownership, equipment and material checks are tracked separately.
UL ownership
Not independently verifiedNo supporting record has been reviewed for this category.
Qualification request: Legal holder, manufacturing address and current UL recognition.
Equipment & in-house processing
Not independently verifiedNo supporting record has been reviewed for this category.
Qualification request: Machine inventory, location and evidence that the relevant process runs at the quoted site.
Material traceability
Not independently verifiedNo supporting record has been reviewed for this category.
Qualification request: Laminate grade, supplier documentation and traceable production-batch records.
Sources & review record.
Reviewed 2026-09-21. Manufacturer pages can change; confirm the current revision when requesting a quotation.
- Cojoin Circuits — product and technical documentationhttp://www.cojoin.com.cn/Rigid_flex_joint_plate/index.htmlSource checked 2026-09-21Official website
- Cojoin Circuits — company informationhttp://www.cojoin.com.cn/aboutus/index.htmlSource checked 2026-09-21Official website
- Cojoin Circuits — company informationhttp://www.cojoin.com.cn/Source checked 2026-09-21Official website
- Cojoin Circuits — company informationhttp://www.cojoin.com.cn/yezhi/index.htmlSource checked 2026-09-21Official website
Company names and images identify the source manufacturer. Listing does not imply endorsement, partnership, account participation or completion of a factory audit.
Make the first technical conversation useful.
Which rigid and flexible layer arrangement, bend radius and qualification tests apply to this construction?
Attach the manufacturing brief
Layer stack-up, finished dimensions, copper weights, laminate grade, quantity and delivery destination.
Define acceptance
Finished-hole tolerance, impedance targets, coupon requirements, surface finish and permitted process substitutions.
Confirm the recipient
Agree the manufacturing legal entity, confidentiality terms and approved site before sharing production files.