Shenzhen Changze Technology Co., Ltd is a professional manufacturer specializing in R&D, manufacturing and exporting all types of holographic visuals, holographic screens, and projection Screens since 2004, honor to OEM for some famous International brands, we are the biggest factory of the projection screen in China now. We created a new product line in 2010, including Holographic Projection System, Hologram Display, Projection Film, Holo Gauze, and Hologram Led Fan. More than 10 years of experience in export offer trustable quality products and professional service for each customer.