thanks so much for the compliment and your trust again. As our core advantage, we optimize the well-finished ESL platform(Web-based and App), more user-friendly, higher speed, stability, and security guarantee, allowing for a green and smart display, to help our valuable customers stand out. Indeed, we will always provide hardware direct manufacturing prices, the operation instruction, and detailed user e-manual of the ESL platform, some key steps video tutorials, installation guide files, remote technical team support, and consultation for easy implementation and effective daily usage, hope you have a success business forever..