Which company should I choose for high-voltage complete sets of equipment from South Korea

Hyosung Heavy Industries and HD Hyundai Electric are the leading South Korean suppliers for complete high-voltage equipment sets, offering global standards compliance, turnkey solutions, and extensive project experience.Hyosung Heavy IndustriesHyosung Heavy Industries has a long history in high-voltage transformer technology, developing Korea's first 154 kV transformer in 1969 and advancing to 765 kV transformers by 1992 . Key highlights include:Product Range: Transformers up to 765 kV and 1,500 MVA, including gas-insulated, mobile, phase-shifting, and eco-friendly ester oil transformers .Global Experience: Over 7,500 extra-high-voltage transformers manufactured, with projects in more than 70 countries .Standards Compliance: IEC, ANSI, IEEE, NEMA, BS, JIS, and JEC standards .Special Features: High thermal, dielectric, and mechanical strength; seismic and short-circuit resilience; compact SF6 GIS designs for space efficiency .Turnkey Capabilities: In-house project management, transportation, and installation support worldwide . Hyosung is particularly suitable for large-scale utility projects requiring high-voltage transformers and integrated substation solutions.HD Hyundai ElectricHD Hyundai Electric is Korea's largest electrical equipment provider, offering a comprehensive range of power systems and control solutions . Key features include:Product Range: High-voltage transformers, circuit breakers, motors, generators, and MV/LV distribution systems .Global Reach: Serving approximately 3,600 clients in 135 countries .Eco-Friendly and Digital Solutions: “Greentric” brand for sustainable energy solutions and “Integrict” for digital asset management .Industrial and Marine Applications: Supplies power systems for chemical plants, industrial facilities, and marine vessels . HD Hyundai Electric is ideal for projects requiring integrated power systems, digital monitoring, and eco-friendly solutions.RecommendationFor ultra-high-voltage transformer projects and turnkey substation solutions, Hyosung Heavy Industries is highly recommended due to its extensive experience, global certifications, and specialized high-voltage expertise.For comprehensive power system solutions including high-voltage, medium-voltage, and low-voltage equipment with digital and eco-friendly integration, HD Hyundai Electric is a strong choice. Both companies are internationally recognized, comply with global standards, and provide robust technical support, making them reliable partners for high-voltage equipment procurement from South Korea .