Explore our premium grade Multi-Function Bluetooth Racing Displays and LCD Instrumentation Modules.
Established in 1986, Ruian DongOu Automobile Meter Factory (Dongou) has positioned itself at the cutting edge of automotive instrumentation technology. For nearly four decades, we have focused on R&D, engineering design, and modern production of dashboard display units for motorsports, tuned vehicles, and fleet management networks.
Our operation encompasses a mature technology stack that reliably translates automotive sensor signals, OBDII parameters, and GPS telemetry into actionable digital visual data. By controlling every stage of the design and manufacture process in our state-of-the-art facility, we guarantee long-term performance stability, exceptional response time, and robust product longevity.
We operate two highly targeted brands serving different segments of the automotive modification and professional racing markets.
Jointly engineered with an established Australian automotive technology company, SincoTech represents our elite racing division. Operating under high-precision criteria, SincoTech dashboards deliver real-time racing-critical metrics with millisecond-accuracy. Featuring full sensor kit integration, Bluetooth protocol transceivers, and extreme anti-vibration properties, SincoTech dashboards are designed for waterproof rally, track, and marine environments.
GragonGauge focuses on custom modifications, offering a massive array of analog-digital hybrid instruments. Our portfolio covers crucial readouts including: tachometers (RPM), turbo boost, vacuum metrics, water and oil temperature, oil pressure, voltmeters, air-fuel ratio, and exhaust gas temperature (EGT) sensors. Available in standardized installation diameters: 52mm (2 inches), 60mm (2.36 inches), and 85mm (3.75 inches).
How we ensure global-scale quality, reliability, and precision across every single batch.
With over 38 years of dedicated focus on automotive instrumentation, we have built deep industry knowledge, a mature technical system, and a solid reputation for reliability and efficiency.
We provide customized automotive gauge services, supporting the customization of your own brand logo. We can also adjust the appearance, display range, and core MCU parameters based on your requirements.
Equipped with precision testing facilities, including environmental chambers and electrical simulators, guaranteeing high-standard control from PCB wave soldering to final assembly packaging.
Integrating next-generation protocols and optical tech into standard aftermarket OBD2 systems.
As vehicle ECUs transition from standard High-Speed CAN (500 kbps) to CAN-FD (Flexible Data-rate, up to 5 Mbps), standard OBD2 readers experience bus traffic delays and packet drops. Ruian DongOu's R&D department is proactively engineering dynamic transceiver architectures compatible with both legacy SAE J1979 OBD2 protocols and modern CAN-FD networks.
Our upcoming product lineup features intelligent protocol auto-negotiation, ensuring seamless plug-and-play operations on older performance classics as well as the latest mild-hybrid platforms.
Automotive cockpits are subject to severe direct sunlight glare. Standard air-gapped displays struggle with inner-reflection, reducing readability. We utilize full optical bonding technology (LOCA - Liquid Optically Clear Adhesive) to fill the gap between the glass panel and the TFT/LCD cell. This tech dramatically reduces light reflection by up to 70% and increases contrast by 300%, ensuring track racers have critical RPM and oil pressure indicators in direct sunlight.
| Feature | Legacy OBD2 Gauges | SincoTech OBD2 Systems |
|---|---|---|
| Bus Protocol | ISO 9141-2, KWP2000 | CAN-FD / ISO 15765-4 / Bluetooth 5.0 |
| Refresh Rate | 2-5 Hz | Up to 25 Hz (Real-time tracking) |
| Display Panel | Standard Segment LCD | OLED & IPS Panels with 7-Color Backlight |
| Ingress Rating | IP50 (Dusty interior only) | IP65-IP67 Waterproof Rally Grade |
| Custom PID Mapping | Fixed Factory PIDs Only | Supported (Engine Specific oil temp, trans temp) |
Catering to the stringent procurement needs of Tier-1 buyers, fleet managers, and international performance parts importers.
For commercial truck and logistics operators, we provide optimized dashboards displaying operational efficiency metrics like real-time fuel efficiency, continuous engine load, and diagnostic fault codes (DTCs). These dashboards allow immediate diagnostic assessment without needing external scan tools.
Tuning shops require specialized gauge solutions for modified boost systems or custom air-fuel ratio control. Dongou supports customizable alarms, warning lights, shift indicator flash limits, and secondary sensor inputs (e.g., EGT, oil pressure sensors) to protect high-cost performance components.
Automotive parts importers can leverage Dongou's end-to-end manufacturing. We offer custom startup screens, brand logotypes engraved on structural plastic backplates, tailored packaging, and custom user manuals designed to build local brand equity in European, US, and Australian markets.
Ruian DongOu Automobile Meter Factory operates advanced manufacturing lines with automated SMT placement, ultrasonic plastic welding, and computer-guided calibration systems. Based in Ruian, Wenzhou—the automotive component capital of China—we benefit from an integrated local supply chain network, allowing us to procure components quickly, minimize logistics lead times, and maintain stable production costs.
Our supply chain resilience is built upon structured inventory management of long-lead electronic components (MCUs, display driver ICs, transceivers). This buffer strategy prevents sudden chip shortages from stalling international bulk orders, guaranteeing reliable dispatch times even during volatile market conditions.
How we ensure global market access and regulatory compliance for our international wholesale partners.
Our Bluetooth-enabled digital dashboards conform to all European (CE) and North American (FCC Part 15) emissions and radio communication parameters to prevent signal interference with modern vehicle electronics.
We take environmental safety seriously. All soldering pastes, structural plastics, and internal copper alloy connectors comply strictly with the European RoHS directive, ensuring lead-free and eco-friendly hardware.
Specifically for the SincoTech DO908 rally dashboards, we use high-grade silicone sealing gaskets and custom molded casings to achieve complete IP67 waterproof validation, making it perfect for marine vessels or open-cockpit UTVs.
No matter where you install our gauges, we provide crystal clear parameter monitoring for a safer, more precise driving experience.
Configure tachometers, boost metrics, and exhaust gas sensors on the pillar dashboard or instrument panel based on customized tuning specifications.
Read up to 9-18 engine characteristics using a single high-brightness LCD display panel connected directly to the OBDII CAN bus hub.
Adjustable bracket options enable mounting onto the central console, center of the steering wheel hub, or directly over OEM dashboard clusters.
Answering key technical and logistical queries from global automotive procurement agencies.
Our multi-function dashboards (such as the DO922 or DO921 models) feature a dedicated wireless OBD2 scanner pod that plugs into the vehicle's diagnostic link connector (DLC). This pod transmits engine parameters over a secured, low-latency Bluetooth 5.0 channel directly to the dashboard module, minimizing interior wiring clutter and simplifying dashboard integration.
Yes. Ruian DongOu Automobile Meter Factory provides extensive OEM/ODM support. This includes silk-screening company logos onto the bezel housing, flashing custom startup logos directly into the dashboard software firmware, designing custom cardboard product boxes, and manufacturing specialized bracket mounts tailored to your specifications.
Our multi-function systems typically trace and show: Vehicle Speed, Engine Speed (RPM), Water Temperature, Oil Temperature, Oil Pressure, Intake Air Temperature, Turbo Boost Pressure, Voltage, Air-Fuel Ratio (AFR), and Exhaust Gas Temperature (EGT). External sensor kits are provided to capture readings not natively supported by the standard OBD2 protocol.
Under our SincoTech brand, dashboards are engineered with waterproof sensor plugs, high-rigidity structural shells, and PCB components covered with conformal coatings to protect against dust, condensation, and oil ingress. Additionally, each device undergoes a continuous vibration test cycle (over 10,000 cycles) before packaging to guarantee absolute performance on rugged rally tracks.
For standard off-the-shelf items under the SincoTech or GragonGauge brands, we support low minimum order quantities (MOQs) starting at 10-50 units to accommodate local testing. For custom logo engraving or deep firmware changes (startup logo, custom colors), the standard starting MOQ is 100-200 units depending on complexity.
The SincoTech DO917 uses an included high-frequency external GPS antenna. It decodes satellite telemetry to determine real-time ground velocity with high precision, making it an excellent speed tracking instrument for vintage cars, marine boats, off-road vehicles, or agricultural machinery where standard OBD2 ports are unavailable.
Choose from our wide selection of aftermarket gauges, tachometer kits, and OBDII diagnostics.
Dongou