• ✅ IP67-Rated Junction Box
    Ensures high reliability and protection from environmental stress.

  • ✅ Premium Encapsulation Materials
    High-transitivity EVA and weather-resistant silicone sealants ensure long-term performance and weatherproofing.

  • ✅ Proven Raw Material Selection Process
    A well-established change management system guarantees quality continuity with any material updates.


Advanced Testing Procedures

To guarantee the reliability and global bankability of our modules, each product undergoes stringent internal and third-party testing, including:

  • 🔧 Dynamic Mechanical Load Testing

  • 🌧️ Humidity Freeze Testing

  • 🌡️ Thermal Cycling

  • 🌞 UV Exposure Test

  • 💧 Damp Heat Test


At Istuti Solar, the combination of expert craftsmanship and rigorous testing protocols ensures our modules are built to withstand real-world challenges — delivering consistent performance, wherever they’re deployed.