2013, XY SCREEN screen projection screen set up manufacturing plant in China - Guangzhou-Yun audio-visual equipment, base set up in Guangzhou City, Guangdong Province, production of product categories are screen frame, curved screen frame, electric screen, Folding screen, easy screen, large-scale projects, such as electric and projector hanger; curtain material including acoustically transparent screen, 3D acoustically transparent screen, metal screen, high-definition screen soft, high-definition screen and other glass. The company's main product projection screen, projector screen is mainly used in home theater, office culture, education and other places, customers are welcome to come to counseling. Projection screen size and viewing distance: Whether or not to create a 4K home theater projector screen size proportions must be combined with the visual space, the ratio generally recommend projection screen 16: 9 aspect ratio routine, if the front wall are more You can choose the type of long, narrow 2.35: 1. Also do not suggest that you select 4: 3 aspect ratio projection screen projection screen decoration, more even high-definition TV shows have a 16: 9 size, unless you or to watch standard definition programs based. The projection screen size is not a small problem, the first to reflect the advantages of 4K display, you must use a larger screen size. Some manufacturers and agencies viewing distance is 1.5 times the height of the projection screen projection screen picture, this data is not absolute, but also vary according to the individual should first eye habits, it is best to experience the movie theater or presentation room projector screen before they set their own viewing distance. 2013 projection curtain, XY SCREEN projection screen set up manufacturing plant in China mainland screen - Guangzhou-Yun audio-visual equipment, base set up in Guangzhou City, Guangdong Province, production of product categories are screen frame, curved screen frame, electric screen, folding screen, a simple screen, large-scale projects, such as electric and projector hanger; curtain material including acoustically transparent screen, 3D acoustically transparent screen, metal screen, high-definition screen soft, high-definition screen, such as fiberglass. The company's main product projection screen, projector screen is mainly used in home theater, office culture, education and other places, customers are welcome to come to counseling. Development of sound: mono - two-channel (stereo) - Dolby Surround (4--2-4 Matrix Code) - Protection 1981 AC-1 (called perceptual coding system, used in DBS satellite receiving system ) - 1985, AC-2 (also called perceptual coding systems, apply to the HDTV) - 1991 AC-3 (applied Theater System) - 1993 DTS appears. Projection screen decoration, male cloud audiovisual equipment (certified), Yunfu projection screen provided by the Guangzhou-Yun audio-visual equipment. Guangzhou-Yun audio-visual equipment, Ltd. (www.xy-screen.com) is Guangzhou, film screenings leader in equipment over the years, the company is implementing the scientific management, innovation and development, the principle of honesty and trustworthiness, and satisfy customer needs . Male leadership in cloud audiovisual equipment with the staff warmly welcome all inquiries negotiations to create audio-visual equipment cloud hung a better future.