When sourcing advertising light banners, prioritize LED brightness (measured in Lumens) and color temperature (K) to ensure visual impact. For outdoor use, an IP65 or higher waterproof rating is essential to protect against dust and moisture. Additionally, verify the frame material, such as 6063-T5 aircraft-grade aluminum, which offers the best balance between lightweight portability and structural durability. For fabric-based light boxes, ensure the use of UV-resistant tension fabric to prevent fading under direct sunlight.