The company is deeply involved in the Brazilian national power grid upgrade project, providing high-performance composite insulators for the country's trunk power lines, helping to improve regional power supply stability. The project covers the Amazon rainforest and coastal high-temperature and high-humidity areas, facing harsh environmental challenges such as strong corrosion and high mechanical loads. In response to the needs, our company customized the development, and the salt spray corrosion resistance exceeds the industry standard by 30%, which is suitable for long-term use in tropical climates. The insulator is made of silicone rubber composite material, and the umbrella skirt structure is optimized by fluid mechanics to effectively resist the flashover risk caused by heavy rain and dirty environment. After the product was delivered, it successfully supported the 500kV transmission line across more than 2,000 kilometers of complex terrain, reducing the failure rate caused by material aging by more than 60%. During the project execution, the technical team worked closely with the Brazilian National Electricity Agency (ANEEL) to provide localized installation guidance and full life cycle maintenance solutions. The project has been operating stably for three years since its commissioning, and has been highly recognized by customers, laying the foundation for subsequent cooperation in the South American market. This case demonstrates our company's technical strength and customized service capabilities in the field of overseas power infrastructure.