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Engineered for Hungary's demanding industrial and infrastructure environments — explore our flagship waterproof connector series.
Shandong Longli Electronics Co., Ltd. is a nationally recognized "Key Little Giant" enterprise — specialized, refined, unique, and innovative. Designated as a provincial-level Gazelle Enterprise, Hidden Champion, and Manufacturing Single Champion in Shandong Province, Longli is one of China's foremost manufacturers of waterproof cord connectors and circular electrical connectors.
The company operates dedicated R&D centers in Linyi, Xi'an, and Jinan, and holds comprehensive third-party testing and inspection service capabilities, with prestigious certifications including CMA and CNAS. These credentials make Longli the preferred waterproof connector supplier for demanding international markets — including Hungary and the wider Central European region.
National-Level Key Little Giant EnterpriseBacked by large-scale production capacity and a comprehensive product portfolio serving global markets including Hungary.
Hungary is one of Central Europe's most dynamic industrial economies. Here's why waterproof cord connectors are critical to its growth sectors.
Hungary hosts major automotive OEMs and Tier-1 suppliers including Audi, Mercedes-Benz, Stellantis, and Samsung SDI. These plants demand high-performance waterproof cord connectors for EV battery systems, powertrain wiring harnesses, underbody electronics, and assembly robotics — all requiring IP67/IP68 rated sealing solutions.
Hungary's national energy transition strategy is accelerating solar farm installations and smart grid upgrades across the Great Hungarian Plain. Waterproof circular connectors are essential for outdoor photovoltaic inverters, wind turbine junction boxes, and grid-connected energy storage systems operating in Hungary's variable continental climate.
Hungary's railway modernization program, including upgrades along the Budapest–Belgrade corridor and suburban rail electrification, requires robust waterproof connectors for signaling systems, traction electronics, and onboard power distribution. Our bayonet-lock circular connectors meet EN 50155 railway standards for vibration and moisture resistance.
Hungary's government-backed Industry 4.0 initiatives are driving rapid adoption of smart manufacturing across Budapest, Győr, Debrecen, and Miskolc industrial zones. Waterproof connectors protect sensor networks, servo drives, and collaborative robots operating in high-humidity or washdown factory environments.
Hungary's extensive Danube river infrastructure, municipal water treatment facilities, and agricultural irrigation networks require submersible-grade waterproof connectors for pump controllers, level sensors, and remote monitoring equipment — applications where IP68 sealing and corrosion resistance are non-negotiable.
Budapest and major Hungarian cities are rolling out 5G infrastructure and smart city sensor networks. Outdoor-rated waterproof cord connectors protect base station power feeds, traffic management sensors, environmental monitoring nodes, and public lighting control systems against Hungary's rain, frost, and temperature extremes.
Key market forces shaping the waterproof connector industry across Hungary and the Central European region through 2030.
Hungary has become Europe's leading EV battery manufacturing destination, with Samsung SDI, SK On, and CATL investing in gigafactories near Debrecen and Győr. These facilities require millions of high-reliability waterproof connectors annually for battery module interconnects, thermal management systems, and BMS wiring — creating a massive, sustained demand for IP67+ rated cord connectors.
As Hungarian electronics manufacturers push toward smaller, lighter designs for automotive and industrial IoT applications, demand is rising for compact waterproof connectors such as our J30JM1/2 Series Gas Sealed Mini-Rectangular Connectors — delivering full IP protection in a fraction of the space of traditional circular connectors.
The EU's updated machinery directive and ATEX regulations are raising the bar for connector performance in Hungarian industrial plants. Manufacturers must now source connectors certified to IEC 60529, EN 50155, and MIL-DTL standards — areas where Longli's product range excels with validated test data from CNAS-accredited laboratories.
Following global supply disruptions, Hungarian procurement managers are actively seeking qualified alternative suppliers for critical connector components. Longli's proven track record supplying to 20+ countries, combined with flexible MOQ policies and fast international logistics, positions us as an ideal dual-source or primary supplier for Hungarian OEMs and EMS providers.
Hungarian smart factories are integrating sensor-embedded connectors into digital twin platforms for real-time asset monitoring. This trend demands connectors with embedded data contacts alongside power pins — a capability Longli addresses through its multi-contact waterproof circular connector series supporting both signal and power in a single sealed housing.
Over 20 achievements have passed provincial appraisals, with two reaching international advanced levels and twelve achieving domestic leading levels.
Awarded Science and Technology Progress, Patent Star Enterprise, and Famous Trademark. Numerous products listed in the National Torch Program.
Over 10 senior engineers and 100 R&D professionals. Regional R&D centers and 12 technical departments dedicated to connector innovation.
Certified to ISO9001:2015 & IATF16949:2016, with CQC and MA certifications. Equipped with advanced testing labs and complete quality processes.
Products exported to more than 20 countries. Long-term stable partnerships with military, grid and new energy clients across Europe and Asia.
The company has undertaken more than 60 research projects, including the Torch Program of the Ministry of Science and Technology, provincial major science and technology projects, and provincial key R&D programs.
Received 25 scientific and technological awards including provincial science and technology awards and provincial SME technological progress awards.
Undertaken over 60 research projects at national and provincial levels, driving continuous connector technology advancement.
Over 20 achievements have passed provincial appraisals — two reaching international advanced levels and twelve achieving domestic leading levels.
The company primarily offers seven major categories of products, including military connectors, smart grid connectors, new energy vehicle connectors, railway locomotive connectors, mining connectors, petroleum connectors, and marine connectors — encompassing over 130 series and thousands of specifications. These products are widely used in aviation, aerospace, military electronic equipment, as well as various sectors of the national economy such as power grids, new energy, railways, telecommunications, petroleum, and coal mining.
Browse our full portfolio of waterproof circular and rectangular connectors — engineered for Hungary's automotive, energy, railway, and industrial applications.
Whether you're sourcing for automotive, energy, railway, or industrial automation applications in Hungary — Longli delivers certified, high-performance waterproof cord connectors with global logistics support.
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