Export-Grade Products
Certified HMI, Sensor & Flex PCB Production Range
Direct from our 10,000㎡ Intertek-verified production facility. Engineered to strict European dimensional tolerances, IPC-6013 standards, and rigorous environmental sealing parameters.
Engineering Flex PCB & HMI Assemblies for the Greater Zagreb Industrial Ecosystem
As the commercial, educational, and high-tech center of the Republic of Croatia, Zagreb and the surrounding Zagreb County (Zagrebačka županija) have emerged as critical southeastern European corridors for advanced mechatronics, power electronics, embedded computing, and specialized medical apparatus. Between established technological epicenters like the Ruđer Bošković Institute, tech incubators across Lučko and Jankomir, and expanding automation facilities near Sveta Nedelja, the demand for high-reliability, lightweight, and vibration-resistant electronic assemblies has accelerated exponentially.
Traditional rigid printed circuit boards frequently present spatial and physical design bottlenecks in miniaturized industrial hardware, hermetically enclosed field instruments, and mobile diagnostic monitors. As a veteran custom manufacturer and direct exporter, our facility provides Zagreb's hardware engineering teams with seamless access to high-tier single-sided, double-sided, multilayer, and rigid-flex polyimide (PI) circuits. By unifying copper-clad polyimide etching, surface-mount component placement (SMT), fine-pitch connector crimping, and precision graphic overlays within an automated single-source pipeline, we bridge the gap between initial DFM prototypes and high-volume mass manufacturing.
Technical Note for European Procurement: All flexible printed circuits and membrane switch assemblies destined for the EU common market comply strictly with RoHS Directive 2011/65/EU (and its amendment EU 2015/863), REACH compliance (EC 1907/2006), and CE compatibility frameworks, accompanied by complete batch traceability dossiers and material declaration certificates.
Our integrated manufacturing approach eliminates multi-vendor misalignment. Rather than sourcing membrane graphics in Eastern Europe, polyimide traces in Asia, and mechanical elastomer keys through third-party brokers, we deliver unified, fully tested plug-and-play human-machine interfaces directly to your assembly line or EMS partner in Zagreb.
Targeted Applications
Zagreb Sector Implementations: High-Spec Use Cases
Configured to withstand harsh field operating parameters, electromagnetic interference (EMI), and repetitive actuation across key Croatian industry clusters.
High-Voltage Power Distribution & Grid Relays
Zagreb hosts established manufacturers of electrical substations, traction equipment, and smart transformers. We fabricate multi-layer FPC circuits with copper weights up to 3oz, embedded Kapton stiffeners, and dielectric breakdown thresholds exceeding 5kV. These flex cables replace cumbersome wire harnesses in cramped relay control boxes, guaranteeing zero routing failure under continuous high-vibration and cyclic thermal loads.
Clinical Diagnostic Hardware & Monitoring
Croatia’s medical device developers require HMI interfaces compatible with aggressive clinical sterilization. Our medical touch interfaces combine anti-microbial textured polyester overlays, IP67 perimeter liquid gasket barriers, and embedded tactile metal domes. Designed to resist frequent wipedowns with sodium hypochlorite, isopropyl alcohol, and quaternary ammonium compounds without graphic degradation or membrane shorting.
Electric Mobility, BMS & Telematics Subsystems
Serving northern Croatia's world-class EV powertrain and high-performance battery engineering companies. We engineer lightweight flexible printed harnesses capable of dynamic micro-radius bending (down to R=1.5mm) inside battery pack enclosures. With integrated NTC thermistors, nickel-plated contact fingers, and flame-retardant adhesiveless polyimide laminates (UL94 V-0), our flex solutions monitor individual cell voltage while saving vital pack volume.
Macro Trends Shaping Circuit Procurement in Continental Croatia
The manufacturing fabric across central and northern Croatia has transitioned decisively from low-complexity contract fabrication to high-value-added mechatronic systems engineering. Croatian firms operating under the EU Green Deal mandates are systematically re-engineering their equipment architectures to achieve higher energy densities and lighter vehicular or system tare weights.
Three distinct engineering trends are currently dictating component selection across Zagreb's R&D departments:
1. Replacement of Traditional Wire Bundles with Rigid-Flex Technology: The labor-intensive nature of hand-crimped discrete cabling is incompatible with modern automated production throughput. Croatian R&D teams are implementing 4-layer and 6-layer rigid-flex circuits that integrate main compute boards directly with peripheral sensors, eliminating bulky Molex/JST connectors, slashing assembly labor costs, and dropping parasitic line inductance in high-speed communication buses.
2. Consolidation of Force Sensing Resistors (FSR) with Capacitive Keypads: In industrial weighing, packaging machinery, and security gate controls around Zagreb’s freight logistics terminals, multi-modal human input has become paramount. Mechanical switches are being substituted with hybrid panels that marry capacitive proximity detection with printed thin-film force sensors (FSR), preventing false triggers caused by water sprays or electromagnetic spikes.
3. Demand for Turnkey Tested Modules Under Just-In-Time (JIT) Delivery: Local original equipment manufacturers operate with tight warehousing footprints and lean inventories. Our export channel supports buffer stocking, serialized test logs, and barcoded traceability to Zagreb freight clearing houses (Franjo Tuđman Cargo Terminal), providing streamlined delivery cycles that keep factory floors operating without disruption.
Selection Matrix
Engineering Stack-Up & Circuit Substrate Specifications
Compare technical characteristics to establish the optimum cost-to-performance ratio for your hardware build.
| Technology Category | Primary Substrate Material | Dielectric Constant (Dk) | Dynamic Flex Radius | Operating Temp Range | Primary Industrial Suitability |
|---|---|---|---|---|---|
| Adhesiveless Polyimide FPC | DuPont Pyralux PI Copper Clad | 3.2 @ 1 MHz | ≥ 6x Board Thickness | -50°C to +150°C | Automotive Powertrains, BMS, Robotics |
| Silver-Printed Flexible PET | Heat-Stabilized Polyester Film | 3.0 @ 1 kHz | Static / Minimal Bend | -20°C to +70°C | Membrane Switches, Cost-Sensitive HMIs |
| Symmetrical Rigid-Flex Hybrid | FR4 Core + Polyimide Midlayer | 3.4 - 4.4 Differential | Bend-to-Install Zone | -40°C to +130°C | Compact Telematics, Defense Radio, Medical |
| Integrated Force Sensor (FSR) | Nanocomposite Carbon-PET Film | N/A (Piezo-Resistive) | Semi-flexible Surface | -30°C to +85°C | Variable-Speed Controls, Robotics Grippers |
| Molded Elastomer Hybrid Keypad | Medical Silicone + FPC Contact | 2.8 @ 100 Hz | Elastomeric Compression | -40°C to +140°C | Rugged Surveying Equipment, Handheld Pos |
Factory-Direct Manufacturing: Why Zagreb Hardware Developers Partner With Us
Procuring specialized flex interconnects and custom interface consoles halfway across the globe requires unwavering confidence in structural durability, dimensional precision, and material integrity. Our company operates an advanced 10,000㎡ production facility staffed by 121 highly trained technicians and engineers, evaluated and confirmed on-site by international inspection agency Intertek.
Unlike contract broker firms that outsource the manufacturing stages to multiple disparate workshops, our Dongguan plant houses every critical discipline internally:
- Automated Cleanroom Printing: Class 10,000 temperature-and-humidity stabilized cleanrooms for high-accuracy screen printing and zero-particulate graphic overlay curing.
- Ultra-Fine Pitch Circuit Etching: Capability to process down to 0.05mm/0.05mm (2mil/2mil) trace width and spacing on flex copper polyimide substrates.
- SMT Component Automation: High-speed optical pick-and-place lines for surface-mount LEDs, resistors, diodes, and micro-controllers bonded with conductive epoxy or lead-free reflow soldering.
- Precision Digital Die-Cutting: Laser and flatbed mechanical cutting guaranteeing contour tolerances within ±0.05mm for flawless housing fitment.
On-Site Reliability & Validation Testing Laboratory
Before any production lot leaves our factory for cargo transit to Zagreb, it is subjected to 100% automated electrical continuity testing and comprehensive lot verification across nine specialized testing stations:
Key Life Cycle Tester
Endurance testing up to 5,000,000 actuations verifying metal dome and membrane snap-action recovery.
Force-Displacement Tester
Plots dynamic tactile curve graphs to guarantee identical keystroke resistance and snap ratio across all keys.
Temp & Humidity Chamber
Thermal shock profiling from -40°C to +150°C and 95% RH to confirm adhesive bond shear strength.
Tensile Peel Tester
Calibrated 90° and 180° adhesive peel validation to verify zero layer delamination on 3M adhesives.
Ink Abrasion Tester
Norman abrasion and solvent chemical rubbing checks guaranteeing zero front-panel legend erosion.
UV Yellowing Chamber
Accelerated sunlight weathering to certify optical clarity on display windows and gauge faces.
Procurement Clarity
Frequently Asked Questions: Zagreb & EU Buyers
Everything your hardware design engineers and commercial purchasing officers need to know about quoting, tooling, customs, and delivery.
How do you handle shipping logistics and customs clearance into Croatia?
We routinely ship to corporate and industrial addresses across Zagreb (including Žitnjak, Jankomir, and Lučko business districts) using DAP (Delivered at Place) or DDP (Delivered Duty Paid) Incoterms via air express courier partners (DHL Express, FedEx, UPS) and consolidated air cargo to Zagreb Franjo Tuđman Airport (ZAG).
We provide full commercial invoices with exact EU TARIC/HS commodity codes, Certificates of Origin, packing lists, and comprehensive customs declarations. Consignees with a valid Croatian EORI and PDV (VAT) registration can clear consignments within 24 to 48 hours of touchdown.
What specific engineering files and documentation are required for a formal quote?
To deliver a thorough Design for Manufacturability (DFM) assessment and cost breakdown within 24–48 hours, our project engineering desk requires:
1. For Flex PCBs / Rigid-Flex: Standard RS-274X or ODB++ Gerber files with layer stack-up definitions, copper weights, coverlay type, stiffener requirements (FR4, Kapton, Aluminum), and surface finish (ENIG, Immersion Tin, OSP).
2. For Membrane Switches & Keypads: Vector artwork (Adobe Illustrator .AI, DXF, or PDF) indicating Pantone (PMS) or RAL color references, button embossing profiles, LED layout, pinout schematic, connector type/pitch (e.g., Nicomatic, FCI, ZIF tail), and adhesive model (e.g., 3M 467MP, 468MP, or 300LSE for low-surface-energy plastics).
What are your Minimum Order Quantities (MOQs) for prototypes versus production?
We understand that innovative hardware development starts with iterative piloting. For prototype and pre-series validation runs, our typical MOQ starts at just 50 to 100 pieces, supported by dedicated laser-cut tooling to minimize upfront Non-Recurring Engineering (NRE) costs.
Once design verification test (DVT) stages are approved, our automated reel-to-reel and high-speed multi-up press tooling seamlessly transitions into mass production volumes of 5,000 to 100,000+ units with substantial per-unit cost efficiencies.
Can your flexible circuits withstand high-temperature automotive or heavy motor environments?
Yes. For applications exposed to engine compartments, heavy electric motor inverters, or outdoor transformer fields, we specify cast polyimide adhesiveless laminates. Unlike conventional adhesive-based copper laminates that can blister or delaminate at high temperatures, adhesiveless polyimide delivers continuous thermal endurance from -50°C to +150°C and short excursions up to +260°C (lead-free soldering profile compatible).
We also offer high-pot dielectric covers, EMI aluminum or silver paste shielding layers, and conformal coatings that guard against engine oils, hydraulic fluids, and industrial atmospheric moisture.
How does AXRU ensure quality compliance and prevent counterfeit materials?
All core raw materials are procured strictly through authorized direct distribution channels. We maintain full material certifications for DuPont Kapton and Pyralux, 3M pressure-sensitive transfer tapes, Autotype MacDermid Autotex PET films, and Shin-Etsu medical silicone rubbers.
Every shipment is accompanied by a Certificate of Conformance (CoC), 100% electrical test inspection reports, and dimensional verification sheets. First Article Inspection (FAI) reports and Production Part Approval Process (PPAP Level 3) packages are readily available upon request for high-reliability medical and automotive accounts.
Ready to Optimize Your Flex Circuit & HMI Manufacturing?
Connect directly with our engineering sales group. Request comprehensive product documentation, material sample swatches, or submit your Gerber/CAD files for a complimentary DFM analysis.