What is ALR? Does the projector have to use an ALR screen?
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Nowadays, home theaters are becoming more and more popular and sought after by people. Not only are there more and more brands and types of projectors, but also the types and functions of the screen of the projectors...
How to solve the small depression on the screen because there is a foreign body on the screen shaft?
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In the daily use of the screen, small foreign objects may fall into the scroll of the screen, such as some food scraps, metal pieces, etc., resulting in small depressions on the screen due to foreign objects.As long...
