Group 1 - The company Dazhongnan (002263) primarily produces diffusion film base membranes, which are mainly used in liquid crystal display backlight modules [1] - The optical film produced by the company enhances display effects by improving light distribution [1]

Group 1 - The company primarily produces diffusion film base membranes, which are mainly used in liquid crystal display backlight modules [2] - The optical film enhances display effects by improving light distribution [2] - The information was provided in response to an investor inquiry on an interactive platform [2]