After sales maintenance 1.Receive the cargo Make sure the cargo in sealing condition and the cargo storage temperature between - 30ºC and 60ºC when you receive the goods from the customs 2. Install and use the product Please adopt preheating model to light it up and keep 30% brightness for 0.5-2 hours when you use it . Keep it work 8 hours or above continually per day will be better. It will be better to use it at least once a week. 3. Cleaning Ensure to use soft brush to clean the display surface and PROHIBIT any liquid when doing cleaning.