1.Q: How to maintain projection screens?
A::When finish using it ,remember to check if there is any dust or diirty on the surface of the screen .If there is ,pls clean it with soft clothing and roll the screen to the matellic housing .When you don't use it ,pls make sure the screen rolled into the matalic cover.

2. Q:If I want to choose a screen for home theatre ,which type is the best?
A: It depends on the environment and the condition of the projector .We hereby suggest the white video Fabric .White video Fabric was formed by soft PVC which with diamond veins on it .The feature are delicate texture,smooth ,flat ,and flexible surface which can remove cockles ,fully reverts the image color as well as high contrast ratio. But if your projector is not with a hige contrast ,it will be better for you to choose Gray Video Spectra.By lowering the black levels of the projected video image,this surface creates a more film-like image and is a good choice white video is the main source of projected information.

3. Q: Could you pls tell us the main characters of Snowhite-brand electric screen?
A:The main characters of the sreen can be customized in the following aspects :
1.Adopt fashionable aluminum housing with paint coated,tubular motor ,look luxurious .
2.Peaceful and smooth tubular motor,heat protection system ,which prolongs the motor's life .
3.Matte white screen ,not easy to get deformed ,can be washed by warm soaped and water .
4.Our products are guranteed by insurance company.

4.Q: Can we choose the normal screen for the 3D theatre or something different ?
A: Normally speaking ,the common projector can be applicable to several kinds of the screens . While for the Screen of 3D theatre ,it depends on the projector .If you have the 3D projector ,then normal screen are suitable. But if you project it with two projectors overlapped , the screen with a high gain is a must , we suggest 3D screen facric and plain metallic screen .

5.Q: What size opitons I have for stardard screen fromat?
A: Screen formats are determined by the specific aspect ratio of the screen. Aspect ratio is the fractional relation of the width of a video image compared to its height. The two most common aspect ratios in home video are 4:3 (also known as 4x3, 1.33:1, or standard) and 16:9 (16x9, 1.78:1, or wide-screen). All the older TVs and computer monitors you grew up with had the squarish 4:3 shape--only 33 percent wider than it was high. On the other hand, 16:9 is the native aspect ratio of most HDTV programming; it is 78 percent wider than it is tall, or fully one-third wider than 4:3. Another aspect ratios for education or business is 1:1,which is applicable of the manual screen ,tripod screen ,fast-fold screen and electric screen and so on .

6.Q: How to select a screen best for me?
A: Today, the most commonly sold aspect ratios screens for home theaters are 1.78:1 (16:9) and now growing 2.35:1 (CinemaScope). 16:9 aspect ratio screens are a perfect match to today's HD video projectors. So we highly recommend the aspect ratio with 16:9 is a best choice . .Plus,If you want it for education use ,we advise the aspect ratio with 1:! of the screens ,such as manual screen , tripod screen ,fast-fold screen and electric screen and so on .