Start with the rigid islands and the flexible connections.
Send a mechanical drawing that distinguishes rigid zones, flexible zones, transitions, stiffeners and assembly positions. Define whether bending occurs once during installation or repeatedly in service, with the bend envelope and expected operating conditions. The factory’s table does not establish a flex-cycle life for this photographed design.
Material and coverlay choices.
The detailed Rigid-Flex table lists adhesive-free rolled-copper substrates, PI thicknesses of 1/2/3/4 mil and ½ or 1 oz copper, including Panasonic RF775/RF777 and DuPont AP. It separately lists coverlay adhesive systems, reinforcement and shielding film. Specify a complete material stack with approved alternatives rather than sending only “polyimide”.
Overall layers and flex layers.
The fabrication overview lists rigid-flex 2–24 layers and pure-flex up to eight layers. The detailed Rigid-Flex table contains one-to-eight-layer flexible dimensions and also rigid-board copper rules. A newer rigid-and-flexible service entry repeats a maximum of 24 layers and 4 mm. Ask which rows describe the flexible zone and which describe the complete stack.
Copper-conditioned routing, from the detailed table.
These are different rows, not one minimum to apply to every zone. Outer routing is listed separately as H/H+plating 4/3.5 mil, 1/1+plating 5/3.5 and 2/2+plating 9/5. Agree starting foil, plating build-up and the applicable rule for each layer.
The newer product pages print “0.075/0.075 um” and repeat rigid-flex wording under a pure-flex heading. That unit and scope need clarification; we do not silently convert them into a 0.075 mm pure-flex capability. The detailed table’s impedance tolerance is ±5 Ω at ≤50 Ω and ±10% above 50 Ω, so a single percentage does not represent both ranges.
Set resistance acceptance before choosing a sample limit.
The page describes forming a planar resistance layer from a resistive material and laminating it into a board. Its numerical table gives resistance accuracy, while the broader title mentions capacitance as well. It does not supply a corresponding capacitance accuracy or dielectric-loss specification.
The manufacturer explicitly subjects ultimate capability to review. For your design, provide the resistance material, target values, geometry, allowed drift, temperature conditions and accessible test structures. Agree which electrical measurements will be delivered after lamination and assembly. Do not assume a sample accuracy applies to the mass-production route or that all listed maxima can be combined.
The RF heading does not choose the laminate for you.
The RF/M-Wave page presents Standard and Special columns, but its material row lists general rigid materials such as FR-4 and asks buyers to contact engineering for availability. An RF order still needs an exact laminate and foil designation, dielectric thickness and design-frequency requirements.
Its Standard column lists 2–26 layers for quick delivery and a 609 ×508 mm maximum delivery size. Special lists 40 layers as sample trial production and 1204 ×560 mm. These are process-route statements, not the photographed panel’s dimensions or an available-stock promise.
- Via construction: both columns say no for copper-plated via filling but offer resin plugging types. Specify the filling/capping process and acceptance instead of substituting one technology for another.
- Drilled and finished diameter: mechanical drilling is listed as 0.15 mm Standard / 0.10 mm Special. Finished-via tolerance is a different row: ±0.076 / ±0.05 mm. A drill size is not a finished-hole minimum.
- Coupon and impedance: Standard lists ±10%, Special ±5%. Set the target, reference layers, coupon geometry and measurement report for the approved material stack.
The table’s line/space values depend on copper weight without a corresponding copper condition for each minimum, and its Special outer-copper row reads “120oz”. Those fields need an engineering-issued specification; this profile does not normalise the value or use it as a selectable heavy-copper limit.
Release the panel and inspection requirements together.
The Rigid-Flex SMT entry lists a 550 ×650 mm maximum panel, 6 mm maximum thickness, up to 6500 SMD per panel and ICT/FCT/AOI/X-ray options. Define support tooling for flexible sections, panel handling, component clearance and the test program before treating those individual maxima as one approved assembly.
The EMS equipment page names Panasonic NPM-W2 placement machines, a GKG-GLS printer, JTR-1200-N reflow, Styke 205154X SPI and Moko AOI. It repeats the same “12S printing cycle” and “510×510mm” fields across dissimilar machines and carousel copies. We preserve the named equipment as manufacturer-published information, but do not assign those repeated values as validated machine specifications or count repeated slides as additional machines.
The SMT service text also contains a reference to “Benchmark” and a generic global-facility claim. Neither establishes Fast-PCB’s ownership of those facilities. Request the actual manufacturing site, approved outside processes, operator/inspection requirements and shipment-release responsibility. A listed IPC-A-610 or J-STD-001 option does not select the class and revision for your order.
Prepare fabrication and assembly inputs →Anchor the quotation to the Jiading entity.
The official overseas-sales page gives No.699 Xingqing Road, Jiading Industrial Park, Shanghai 201807 and eric@chinafastpcb.com. UL’s E300750 record names SHANGHAI FAST-PCB CIRCUIT TECHNOLOGY CORP LIMITED at the same street address. Shanghai’s Ecology and Environment Bureau also names 上海嘉捷通电路科技股份有限公司 in Jiading in its 2022 mandatory cleaner-production audit list. This is a historical regulatory record, not evidence of successful completion or an environmental-quality endorsement.
What the UL record actually covers.
The primary E300750 page read here identifies multilayer board type ML-L and prints “Last Revised: 2018-08-01”. Its construction table has its own conductor, thermal and flame-class conditions. Those limits are not used as production routing rules or blanket certification of the RF and rigid-flex photographs. The website separately claims E505046 for flexible wiring; a matching current primary flexible listing was not obtained in this review. Ask for the applicable current model and marking documentation.
The manufacturer hosts management-system certificate copies, including a DNV ISO45001 image whose printed validity ends on 27 May 2025. That copy is historical at this review date. Request current issuer-confirmable copies and their scope when relevant; no current management-system badge is inferred from the website headings.
For a first order, put the quote entity, manufacturing site, approved stack, applicable standard revision, coupons/test coverage and permitted substitutions on the same release sheet. Keep the quick-turn promise tied to engineering approval, material availability and an agreed shipment date.
Sources behind this profile
Individually researched on 8 October 2026. Service-family photographs retain their original framing. Process columns, dated records and ambiguous units remain attached to their own source; they are not combined into one claimed production construction.
- MANUFACTURER / POSITIONINGCompany profile and high-mix/small-batch focus ↗
- MANUFACTURER / CATALOGUEFabrication families and source-image links ↗
- MANUFACTURER / DETAILED FLEXCopper, coverlay, impedance and dimensional rows ↗
- MANUFACTURER / ALTERNATE FLEX24-layer service and literal routing units ↗
- MANUFACTURER / PURE FLEXPure-flex heading with repeated rigid-flex content ↗
- MANUFACTURER / EMBEDDEDMass-production and sample resistance parameters ↗
- MANUFACTURER / RFStandard/Special process conditions ↗
- MANUFACTURER / SMTPanel and assembly-test options ↗
- MANUFACTURER / EQUIPMENTNamed machines and repeated fields ↗
- UL / PRIMARY CONSTRUCTIONE300750 holder, address and ML-L scope ↗
- GOVERNMENT / HISTORICAL RECORDShanghai 2022 mandatory cleaner-production audit list ↗
- MANUFACTURER / COPIESHosted management-system certificate images ↗
- MANUFACTURER / CONTACTOverseas sales and Shanghai address ↗