Scan the QR code of the product to check the authenticity. WELL PROVEN QUALITY: The design of our thermal paste packagings has changed several times, the formula of the composition has remained unchanged, so our MX pastes have stood for high quality HIGH PERFORMANCE: With excellent temperature reduction performance, the MX-4 is ideal for CPU and GPU cooling, and other applications between power semiconductor components and heatsinks SAFE APPLICATION: The MX-4 is metal-free and non-electrical conductive which eliminates any risks of causing short circuit, adding more protection to the CPU and VGA cards HIGH DURABILITY: In contrast to metal and silicon thermal compound, the MX-4 does not compromise over time. Once applied, you do not need to apply it again as it will last at least for 8 years