Changzhou Aohong Electronics Co., Ltd.

Three HDI constructions. Three different release questions.

Changzhou Aohong Electronics Co., Ltd. (常州澳弘电子股份有限公司) publishes double-sided, multilayer and HDI boards from its Changzhou operation. Its HDI catalogue gives individual constructions rather than a single process-limit table. The most useful comparison here is between a power board with plated contacts, a thick-copper automotive board and a fine-line OSP board. Choose the construction closest to your drawing before discussing price or delivery.

Keep the fabrication entity on the quote.

The contact page assigns double-sided, multilayer and HDI work to Changzhou Aohong at No. 15 Xinke Road, Electronic Industrial Park, Xinbei District, Changzhou. It separately assigns single-sided boards to Changzhou Haihong at No. 16 Xingtang Road. Singapore and Hong Kong entries are offshore business entities; their addresses are not substitutes for the manufacturing address.

The original 2025 annual report confirms the legal English name and describes principally in-house, made-to-order PCB manufacture with a small amount of outsourcing. Its HDI upgrade project had entered volume production. Its Thailand project was still at the equipment installation/commissioning stage in that report. The current contact page lists Thailand across four PCB families; this is a separate site listing, not proof of an approved transfer of your construction.

Specify the contact finish separately from the soldering finish.

Construction

8 layers · first-order HDI

Soldering finish

Immersion gold

Contact interface

Plated gold fingers

Listed application

Power / energy

The catalogue uses separate wording for the gold fingers and board finish. Define the finish zones on the drawing: which pads are soldered, which contacts mate repeatedly, and which edges need a bevel. Request the proposed contact plating system and thickness, wear requirement, allowable mask encroachment and connector dimensions. “Gold” alone is not a contact-life specification.

For the power circuit, supply finished copper by layer, operating current, thermal boundary conditions and allowable temperature rise. Specify the laminate grade and approved stack. Nothing on this card establishes a copper weight or a current rating; the automotive example below cannot supply those missing values.

Select power HDI PCB →

Make “thick copper” a layer-specific requirement.

0.05 mm is the published line width, not a line/space pair.

Construction

10 layers · second-order HDI

Published line width

0.05 mm

Surface finish

OSP

Design description

Multiple BGA / impedance designs

The corresponding card names a line width but no minimum spacing. It mentions impedance designs without a tolerance. Do not turn this into 0.05/0.05 mm routing or assign a ±5% impedance promise. Provide the BGA pitch, escape geometry, paired trace/space by copper layer and target impedance with tolerance.

Request the proposed dielectric, reference planes and coupon definition on the same released stack. If the manufacturer changes copper, glass style or material to accommodate the escape routing, review the resulting impedance geometry before accepting the substitution. A routing value taken from this ten-layer OSP construction does not transfer automatically to the six-layer thick-copper construction.

OSP also needs an assembly handoff. Agree the required finish specification, packaging, storage interval and reflow history with the assembler. The card does not publish a storage life, coating thickness or accepted number of reflows, so those belong in the agreed process plan.

Select fine-line HDI PCB →

Ask for a proposed construction, not a list of separate extremes.

Routing & build-up

Send artwork, netlist, stack, drill map and via structures. Require the returned DFM to identify copper-dependent spacing, sequential lamination, via fill/cap and any changed geometry. Keep power, contact and BGA constraints on one approved revision.

Line & site assignment

Name the contracting entity and fabrication site. Ask which HDI imaging, drilling and electrical-test route will handle the order, which operations are outsourced, and what approval is required for a site or process change. The reviewed public pages do not provide a machine-by-machine inventory for these three examples.

Material & lot release

Specify approved laminate/prepreg grades, finished copper and finish zones. Agree incoming material traceability, electrical-test revision, microsections, impedance coupons where applicable and first-article acceptance. Brand names, thicknesses and test reports should relate to the quoted construction and shipment lot.

The current official contact page lists gengkf@czaohong.com for this company. Use the PCBVerified shortlist to prepare the selected construction and attach its order-specific requirements. Choose the relevant catalogue example above or use the engineering brief to finish the fabrication pack.

Sources behind this profile

Individually researched on 8 October 2026. Product photos were matched to the exact official HDI cards and viewed in full; the Changzhou exterior and current logo were checked. Original annual-report pages 5, 12 and 14 were read and visually examined. Company disclosures, product-specific facts and editorial order-review questions are kept distinct. The 2025 project status is dated, not a present-day production guarantee.

1. MANUFACTURER / COMPANYCurrent Aohong company description ↗
2. MANUFACTURER / SITEChangzhou Aohong, Haihong and overseas contact assignments ↗
3. MANUFACTURER / HDIThree illustrated constructions and their exact feature cards ↗
4. MANUFACTURER / DOCUMENTSQualification and patent gallery; request current applicable scope ↗
5. ISSUER / ORIGINAL REPORT2025 annual report: legal identity, production model and dated projects ↗