Taking these 4 points as your LED screen suppliers selection reference, it maybe help you catch your suitable LED display screen from thousands of LED screen company.
https://www.sepled.com/products.html1.SC (Supply Chain)：Whether have built a powerful supply chain/network and have a material inspection team/office to make sure the material received with very decent quality.
3.TS（Terms and Service）: Warranty: 1) Whether prepare the spare parts for their customers (usually 10% quantity of the total square meters)
4. ME(Markets Experience) The supplier would better have experience in your markets, on the one hand, you could go see the on-site projects for your reference,On the other hand, it will be more time-saving in communincation.
The most important for a LED screen supplier is after-service. We always regard it as the start of cooperation.1.) The damaged parts can be returned and replaced within 2 years. A 2-year warranty for Items and 100,000 hours life span of the led lamps is a must.
2.) Installation - Most of products are designed to be easy-installation. 4) Its a time-saving to supply installation videos and images for their customers when they simulate the installation in workshop.
3.) The screen which send out is already finished installation, What the customers should to do is just connect the cable, and wiring drawing will be supplied.If you really have difficulty in installing, it is a better way for difficulty via team-viewer to remote control, or arrange engineers to install and debug it.