This is a multifunctional conference hall project at Shenzhen Zhonghai. The project innovatively uses sandstone sound-absorbing material (particle sound-absorbing board) as raw material, and uses 3D molding to solidify the sound-absorbing lampshade. A single lampshade is 1.5 meters wide, and more than 70 are customized and installed on site. The project features a ceiling of over ten meters on site, and a single lampshade is very heavy, which brings a lot of difficulty to installation. The complex shape of the lampshade tests the skill of the scraping and lining master. Despite the difficulty, our company still completed the construction task within a month, saving sufficient time for the project schedule.