A: We use Nova Taurus Series asynchronous control system. Support cluster play and management. Support APP/Phone/ WIFI/ Ipad/ Laptop/ PC/ Cloud control. It’s very easy and convenient to control. A: Yes, we welcome sample order to test and check quality. Mixed samples are acceptable. A: Yes. Please inform us formally before our production and confirm the design firstly based on our sample. 1: One to one sales engineer to customer responsibility system; 2. Know your project and provide the best solution for it; 3. Track your order and let you know each step and detail of it; 4. Teach you how to install and use the screen; 5. Care the subsequent use of your screen and ensure your after - sales service be well. A: Generally, it will take 7-15 days after receiving your deposit. The specific delivery time depends on the items and the quantity of your order. A: 2-year warranty. Structure design, installation problem, system problem, how to use the screen…don’t worry, we have professional after-sale team to solve your any questions after you placed an order. And your exclusive sales engineer will also help you get over any problems.