The only way that you can know for sure though, is to compare for yourself. genuine PVC over fiberglass, matte white "Ultra High Definition" projector / projection screen material, that is made and sold right here in the U.S.A!
Projector Screens - Accessories – Pyle USA
Spectrum Series100 120&180 Inch Dimensions Projector Screen
American Express
Best projector screen buying guide, what to know before you buy
Da-Lite 184 inch Electric Projector Screen Dalite 35180 Advantage Deluxe Electrol Tensioned Da-Mat HDTV (16:9)
104 Bare/raw Projector Projection Screen Movie Screen Material 94 X 54 Actual Size Plus Plans to Build Your Own Fixed Frame
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104 PRO GRADE MOVIE SCREEN PROJECTOR SCREEN PROJECTION SCREEN BARE MATERIAL USA
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