In the bitterly cold heartland of Harbin City, Heilongjiang Province, a major transportation artery stretching from Fangzheng County to the YanShou–ShangZhi border is quietly undergoing a transformation. The Fangzheng–YanShou–ShangZhi section of the TieKe Expressway, a 76.9-kilometer icy and snowy thoroughfare, faces multiple challenges, including extreme low temperatures, complex terrain, and stringent reliability requirements. Guangwangshi has built a robust digital foundation for this vital northern transportation route with its industrial-grade, all-scenario networking solution.
Severe Challenges in Extreme Cold Conditions
Extreme temperature tests: Winter temperatures can plunge as low as -40°C, causing ordinary network equipment to freeze repeatedly.
Power supply fluctuations: In outdoor environments, lightning strikes are frequent, with voltage swings of ±20%.
Extremely difficult maintenance: Heavy snowstorms make troubleshooting and repairs exceptionally challenging for technicians.
Uninterrupted operations: Toll collection, surveillance, and communication systems demand stable 24/7 performance.
Guangwangshi’s Industrial‑Grade Solution
Intelligent backbone: 10‑Gbps industrial ring network.
Deploying Guangwangshi’s 10‑Gbps Layer 3 industrial managed switches to construct the highway’s neural network:
Flexible configuration with 8 Gigabit electrical ports and 4 10‑Gbps optical ports, supporting line-rate forwarding.
ERPS ring protection technology (<20 ms self-healing), enabling instant failover to ensure zero service interruption.
Wide operating temperature range of -40°C to +75°C, with 6 kV lightning protection and IP40 ingress protection rating.
Dual redundant power supplies, supporting wide DC input (12–57 VDC) and paired with Guangwangshi’s proprietary power supply, which accommodates a broad AC input range of 90–264 V.
Network Architecture: Triple Reliability Assurance
▷ Physical layer reinforcement: Aluminum alloy‑reinforced chassis, earthquake‑ and corrosion‑resistant, with a fanless, silent design.
▷ Protocol layer redundancy: STP/RSTP/MSTP (<50 ms) plus ERPS (<20 ms) dual protocol support.
▷ Intelligent business layer: Dual IPv4/IPv6 stack support, ACL security policies, and QoS service guarantees.
Smart management, strategic control:
ONV‑NMS management platform combined with a mobile app, empowering both ends:
Deploying Guangwangshi’s unified network management software platform enables visualized status monitoring of all devices across the network.
▷ Platform side: Visualized topology management of all network devices, with automatic anomaly diagnostics and alerts.
▷ Mobile side: Real-time push notifications of device alarms, triggering immediate operational responses with zero latency.
Key values:
Full‑network device visualization: Automatic topology discovery and real-time status monitoring.
Early fault warning and localization: Health status of every access point sensed within seconds.
Remote centralized management: Supports web, CLI, SNMP, and other management methods.
Implementation Highlights
Outstanding performance in extreme cold conditions
Continuously stable operation at -40°C, with zero packet loss at the ports, fully meeting the rigorous demands of Northeast China’s frigid climate.
Strong power supply adaptability
The power supply supports a wide AC input range of 90–264 V, accommodating outdoor voltage fluctuations and reducing power failure rates by 90%.
A revolution in operational efficiency
Remote management reduces on-site maintenance frequency, while real-time alarm localization eliminates the need for manual on-site intervention during heavy snowstorms, saving 60% annually in maintenance costs.
Remarkable Results
Digitalization achievements on the expressway:
System availability of 99.99%: Core services have remained uninterrupted since commissioning.
Fault response time under 1 minute: Remote diagnostics automatically pinpoint faults.
Long equipment lifespan: Industrial‑grade design ensures an ultra‑long life of 10 years.
Energy consumption reduced by 40%: Fanless design combined with intelligent power management.
Real‑World Impact→
"In the extreme cold of minus 40 degrees Celsius, Guangwangshi industrial switches act like the 'neural network' of the highway, providing reliable data transmission around the clock. Especially during blizzards, their stability exceeded our expectations," said the head of electromechanical engineering at the TieKe Expressway project command.
Why Choose Guangwangshi?
Guangwangshi Manufacturing Center: Superior manufacturing capabilities, original manufacturer of PoE switches.
Spanning over 23,000 m², the Huizhou Manufacturing Center serves as Guangwangshi Technology’s production hub and innovation powerhouse. It houses sheet metal fabrication, power supply production, an industrial switch smart‑manufacturing workshop, a central laboratory, digital warehousing, and a PoE automation workshop, along with six high-speed SMT lines and six DIP assembly lines, achieving end-to-end integrated production. We are committed to building an industry‑leading digital factory, delivering exceptional PoE switch products worldwide.
22 years of technological accumulation: Over 80 patented technologies, China’s first PoE switch manufacturer, a brand recommended by the Ministry of Public Security, and one of China’s top ten national brands in security transmission.
Proven performance: Successfully delivered over ten million switches, serving customers in more than 160 countries, with stable operation for over three years even in extreme environments (e.g., a gold mine with temperatures exceeding 85°C).
Agile responsiveness: Custom product design, with tailored solutions delivered in just seven days—twice as fast as the industry average. Automated manufacturing shortens standard delivery cycles to one-third of those of comparable companies.
