Explore our leading 9-in-1 racing displays, multi-function sensor kits, and universal GPS speedometers built for high-stress tracking.
Modern commercial automotive fleet operators, engine builders, and performance tuners operate in an era where data fidelity directly impacts survival. The traditional dashboard configuration—once dominated by basic mechanical linkages and inaccurate resistive sensors—is transitioning rapidly into consolidated digital diagnostic display nodes. For high-performance sports cars, custom off-road configurations, and industrial heavy machinery, dashboard displays must reliably process several engine parameters simultaneously in real-time.
As a leading supplier and custom manufacturing facility, Ruian DongOu Automobile Meter Factory has tracked and shaped this transformation. Our technology portfolio ranges from individual 52mm analog-styled electronic gauges up to advanced OLED and LCD integrated dashboards capable of processing and storing up to 18 critical engine parameters. Precision sensor design, high-frequency signal processing, and vehicle network bus integrations represent the foundation of our engineering capabilities.
Established in 1986, Ruian DongOu Automobile Meter Factory is a professional enterprise dedicated to the research, development, and production of automotive instrumentation systems. Since its inception, the company has cultivated deep expertise in the industry for many years, building a mature and complete technical system and possessing stable and efficient production capabilities, establishing a strong reputation in the field of automotive instrumentation.
The company boasts a comprehensive and diverse product portfolio, with two core brands, each with a clear positioning and advantages:
In terms of product size, it covers various specifications including 52mm (2 inches), 60mm (2.36 inches), and 85mm (3.75 inches), matching diverse installation and usage needs in different vehicle cabins and custom mounting layouts.
How we leverage advanced tech, strict quality control, and reliable performance to support global commercial supply chains.
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 across B2B partnerships.
Our two core brands, SincoTech for high-end racing and GragonGauge for diverse modifications, offer a complete and precise solution for performance, marine, off-road, and custom tuning requirements.
We support extensive customization, including custom brand logo implementation, modifications to physical shell design, LED backlighting spectrum calibration, and display range adjustments for specific fluids.
Our products are sold worldwide and have earned praise for stable electrical performance, high-frequency anti-vibration resistance, and comprehensive B2B after-sales engineering support.
How we address the future of automotive instrumentation through hardware advancement and firmware intelligence.
| Feature Category | Legacy Specifications | DongOu Current-Gen (SincoTech & GragonGauge) | Future Development Target (2025-2027) |
|---|---|---|---|
| Signal Processing | Analog resistive sweep circuits with high latency. | High-frequency microcontroller processing, OBD-II bus integration, Bluetooth 4.0 sensor kit. | CAN-FD support, seamless automotive ethernet integration, and multi-protocol direct ECU mapping. |
| Display Hardware | Incondescent-lit plastic faceplate indicators. | High-contrast LCD and OLED displays with active anti-glare coatings and customizable color spectra. | Dynamic micro-LED screens, heads-up display (HUD) projections, and integrated optical bonding. |
| Sensor Integration | Individual, uncalibrated mechanical pressure hoses. | Solid-state high-precision electronic senders (exhaust gas temp, wideband oxygen sensor, boost pressure). | Smart self-diagnostic digital sensors communicating via sub-bus connections directly to the gauge. |
| Environmental Durability | IP50 non-sealed units prone to internal fogging. | IP67 waterproof rating (waterproof LCD rally car race panels DO908) with nitrogen-purged internal casing. | Hermetically sealed glass-to-metal seals matching military-grade durability standards for heavy marine use. |
Our commitment to tech innovation is reflected in the SincoTech DO916 and DO908 models, which process real-time RPM, speed, water temperature, oil temperature, oil pressure, exhaust gas temperature, air-fuel ratio, boost pressure, voltage, and lap timing. B2B clients benefit from custom configurations that consolidate multiple gauges into a single lightweight dashboard panel. This minimizes installation time and eliminates complex cabin wiring harnesses.
Operating out of Ruian, Zhejiang Province—the historical heart of China’s automotive component manufacturing industry—our facility utilizes local industrial clusters. This integration provides access to raw materials, PCB fabrication facilities, and micro-component suppliers. By consolidating these services, we maintain raw material stability, minimize manufacturing costs, and offer favorable pricing for bulk wholesale orders.
Our factory manages a vertically integrated manufacturing line that includes CNC housing fabrication, dust-free LCD assembly, precision calibration labs, and automated quality testing. Our manufacturing system ensures consistent production, allowing us to manage large orders even during supply chain disruptions. With more than 38 years of production experience, we help global distributors mitigate logistics risks and lower total procurement costs.
Tailored monitoring solutions configured for regional driving conditions and industry standards.
Developed in collaboration with Australian motorsport partners, our gauges feature UV protection and dustproof designs. SincoTech waterproof LCD panels are built to perform in off-road vehicles and powerboat engines, handling high vibrations and wet conditions.
Our dashboards are configured to monitor real-time lap times, target air-fuel ratios, oil temperatures, and exhaust gas temperatures (EGT) for sports cars on European race circuits. The adjustable LED shift lights and alarm thresholds protect highly tuned engines under track-day conditions.
For custom tuning garages in North America, we supply traditional 52mm and 60mm gauges under the GragonGauge brand. These models feature dynamic backlighting colors, step-motor movements, and clean designs that mount easily into modern instrument clusters or A-pillars.
Our export dashboard instruments are designed to comply with local regulations in destination markets. Our manufacturing processes meet European CE, RoHS, and FCC certifications, ensuring our gauges meet safety and environmental standards.
We provide localized technical materials, including diagnostic code tables, sensor wiring diagrams, and mounting bracket instructions. By offering detailed B2B product documentation, we help global distributors streamline installation and resolve technical questions quickly.
Explore our specialized range of 3.5-inch racing gauges, wideband oxygen sensor kits, custom tachometers, and modular 52mm display sets.
In-depth technical answers regarding sensor calibration, bus systems, and custom procurement processes.
SincoTech is our high-end brand developed in partnership with an Australian company, designed primarily for motorsports. It features multi-function, high-contrast LCD and OLED display systems that consolidate up to 18 parameters into one dashboard using direct ECU or dedicated sensor networks. GragonGauge specializes in individual, modular modified dashboard gauges (52mm, 60mm, 85mm sizes) such as boost pressure, water temp, oil temp, and exhaust gas temperature gauges, designed for tuner enthusiasts and standard gauge swaps.
The SincoTech DO917 GPS Speedometer uses a high-sensitivity GPS antenna operating on high-frequency refresh protocols. To maintain stability, the firmware includes a motion-tracking algorithm that helps calculate speeds when GPS signals are temporarily obstructed, such as in tunnels or dense urban areas. The system is universal and works independently of the vehicle's transmission configuration.
The SincoTech DO908 is engineered with a hermetically sealed ABS housing and UV-resistant display panel, achieving an IP67 rating. The shell joints are sealed with custom silicone gaskets, and cable exit points use strain-relief rubber grommets. This makes the DO908 suitable for open-cabin off-road vehicles, rally cars, marine boats, and utility vehicles.
Yes. As a manufacturer operating the Ruian DongOu Automobile Meter Factory since 1986, we provide OEM/ODM customization services. We support custom logo printing on display screens, modification of LED backlighting colors, and adjustment of visual alarm thresholds. We also accept custom parameters, shell sizes, and mounting bracket designs based on minimum order quantities (MOQ).
Narrowband systems (such as the DO926NB) provide a basic voltage signal indicating whether the engine is running rich or lean relative to stoichiometry. Wideband systems (such as the DO926WB) use a heater controller and pump cell to calculate the exact lambda value across a broader range of exhaust gas ratios. Wideband configurations are recommended for forced induction setups and precise engine tuning.
Our complete multi-function dash kits include precise electronic sensors for oil pressure, oil temperature, water temperature, boost pressure, and exhaust gas temperature. They also feature a centralized sensor connection box that links individual sensor signals to the main display panel, simplifying installation and wiring.
Standard wholesale orders for existing catalog items are processed and shipped within 15 to 30 business days, depending on order size. Custom OEM/ODM requests that require housing adjustments, custom screen layouts, or specific hardware modifications may require an additional 15 to 20 days for tooling, testing, and validation.
Our exhaust gas temperature sensors use high-grade stainless steel sheaths and K-type thermocouple junctions that can withstand temperatures up to 1100°C. The wiring is wrapped in double-braided fiberglass and stainless steel mesh shielding to protect against electrical noise and high heat under full engine load.
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