Graphic & Circuit Deposition
Precision Screen Printing
Enclosed cleanroom printing facilities equipped with high-density mesh and micro-adjustable squeegee pressure for consistent ink thickness and trace resistance.
Enterprise Manufacturing Backbone
Precision Engineering & Scalable Volume Capacity
Since 2009, Dongguan Cevra Electronic Technology Co., Ltd. has delivered engineered Human-Machine Interface (HMI) solutions to OEM/ODM buyers across North America, Europe, and Asia. Operating from a modernized 2,600㎡ plant in Dongguan, our facility incorporates precision screen printing cleanrooms, computerized stamping, high-speed laser cutting, and automated dome placement systems.
Every phase of our production workflow adheres to rigid ISO 9001 standard operating procedures. By eliminating third-party contractors and processing raw substrates, adhesive lamination, and circuit testing in-house, we assure micro-level alignment accuracy, prolonged tactile lifespans, and punctual batch deliveries.
2,600 m²
Total Industrial Plant Area
16+ Years
Specialized HMI Engineering
100% In-House
Integrated Tooling & Assembly
SGS Verified
Onsite Factory Assessment
Standardized Operation Flow
End-to-End Production Process
Advanced Machinery
High-Precision Manufacturing Infrastructure
Continuous capital investments in automated and optical machinery ensure tight tolerances across all production lots.
High-Volume Production
Automated Printing Lines
Automated multi-color graphic overlay and silver conductive circuit lines ensuring Pantone-matched color consistency and low electrical trace variance.
Micro-Alignment
CCD Target Drilling Machine
Optical image-guided positioning system achieving punch-hole registration within ±0.02 mm across multi-layer PET and FPC flex circuits.
Sheet Metal & Die Stamping
Punching & Forming Units
Computerized mechanical die-stamping presses configured for rim/pillow embossing, venting channels, and burr-free exterior outlines.
Fast Prototyping
Laser Cutting Technology
CO2 and fiber laser cutters providing tool-less rapid sample manufacturing, complex contours, and tight spacing for custom industrial panels.
Lamination Accuracy
Fully Automatic Laminating
Eliminates trapped air bubbles and assures multi-layer bonding uniformity using 3M, Nitto, or Crown acrylic adhesives under controlled pressure.
Scalable Output
Automatic Assembly Stations
Robotic positioning of electronic components, connectors, and multi-tier spacer layers for high-volume membrane switch manufacturing.
Tactile Array Technology
Automatic Dome Assembly
High-accuracy mechanical placement ensuring error-free dome positioning and uniform actuation force across complex multi-key arrays.
Export Ready
Cleanroom Packaging
Anti-static shielding, vacuum seal packs, and custom partitioned export cartons protecting HMI units against transit vibrations and moisture.
Quality Assurance & Verification
Certified In-House Inspection & Testing Lab
Operating under ISO 9001 specifications, our testing lab guarantees electrical, mechanical, and surface environmental compliance prior to lot sign-off.
Optical QA
CCD Vision Inspection
Detects trace micro-fractures, ink voids, and dimensional misalignments on overlay prints and circuits at 50x optical magnification.
Functional Integrity
100% Electrical Testing
Automated contact resistance, loop resistance, insulation resistance, and dielectric withstand tests ensuring circuit functionality.
Tactile Dynamics
Fragment Load & Force Tester
Analyzes tactile snap ratio, trip force curves, and travel distance to verify each metal dome batch complies with technical specifications.
Environmental Simulation
High & Low Temperature Chamber
Thermal stress cycling from -40°C to +85°C to confirm adhesive integrity, ink bonding, and electrical stability in extreme field environments.
Mechanical Adhesion
Tension & Peel Strength Tester
Quantifies adhesive bond force between overlay, spacer, and circuit substrates to eliminate layer delamination over operational lifecycles.
Bond Durability
Holding Tack Tester
Measures shear resistance and constant adhesive holding power under thermal and mechanical loading on various casing materials.
Surface Protection
Electric Pencil Hardness Tester
Evaluates scratch resistance and abrasion durability of hard-coated PET/PC graphic overlays up to 3H/4H hardness ratings.
Dimensional Inspection
Visual Inspection Instrument
2.5D optical coordinate measuring machine verifying tail pitch, key dimensions, and cutout positions to engineering CAD files.
Outgoing Auditing
Final Inspection & QA Line
100% final cosmetic and tactile inspection prior to serial tagging, packaging, and generation of Certificate of Conformance (CoC).
Factory QA/QC Standards Reference
| Test Parameter | Evaluation Instrument | Standard Tolerance / Benchmark | Acceptance Objective |
|---|---|---|---|
| Tactile Actuation Force | Fragment Load Tester | ±20g to ±30g of target specification | Crisp user tactile feedback & long springback life |
| Loop & Contact Resistance | Automated Digital Ohmmeter | < 100 Ω (dependent on trace design) | Stable signal transmission to microcontrollers |
| Thermal Endurance | High/Low Temp Chamber | -40°C to +85°C exposure for 72 hrs | Zero delamination, blistering, or trace fracturing |
| Overlay Surface Hardness | Electric Pencil Hardness Unit | 2H to 3H (hard-coated PET/PC) | High scratch resistance in industrial environments |
| Adhesive Peel Adhesion | Tension Electronic Tester | > 15 N/25mm (3M 467MP / 468MP) | Reliable adhesion to aluminum, steel, and plastics |
R&D & Infrastructure
Engineering Design & Warehouse Operations
From initial design consultations to component sourcing and storage, our team handles every project requirement.
Facility
Dongguan Plant Exterior
Strategically situated in Jinhe Community, Zhangmutou Town, providing fast logistics access to major South China export ports.
Workshop
Dust-Controlled Production Floor
Well-organized layout featuring separate work centers for screen printing, cutting, assembly, and quality validation.
Inventory
Controlled Material Warehouse
Temperature and humidity-regulated storage for Autotype PET, Lexan PC films, conductive pastes, and premium 3M adhesives.
R&D Team
Engineering & DFM Department
Our CAD/CAM engineers review layer stack-ups, dome force matching, and tactile requirements to optimize manufacturability.
Tooling Setup
CAD/CAM Workstations
Digital film generation, laser vector contouring, and rapid tooling design to support quick turnaround for prototype tooling.
Automation
Specialized Automation Tools
Custom fixtures and pneumatic bonding presses designed to maintain precision when producing non-standard tactile switches.