When customizing LED TVs, you must prioritize the Panel Brand and Type (e.g., LG, Samsung, or BOE) as the panel accounts for 70% of the cost. Ensure the resolution meets your market needs, such as 4K UHD (3840x2160) for high-end retail or 1080P FHD for budget hospitality. Additionally, verify the Brightness (Nits) levels—standard indoor TVs require 250-300 nits, while commercial signage may require 500+ nits. Don't forget to specify the Mainboard Solution (e.g., CVTE or Realtek) to ensure stable software performance and smart TV capabilities.