Development/installation/maintenance/management of 3D modeling computer software; development/installation/maintenance/management of 3D scanning computer software; development/installation/maintenance/management of smartphone software for building design and product design (using augmented reality and virtual reality technology, which allows multiple people to connect simultaneously and collaborate through a network); development/installation/maintenance/management of computer software for building design and product design (using augmented reality and virtual reality technology, which allows multiple people to access and collaborate simultaneously through a network); development/installation/maintenance/management of computer software and hardware for remote access; development/installation/maintenance/management of computer software for e-commerce; development/installation/maintenance/management of augmented reality/virtual reality/3D modeling technology-related software; consultancy relating to computer software; design/development/installation/management/updating of computer programs/mobile electronic devices and website programs; development/installation/maintenance/management of computer software for video conferencing; design of 3D technology-related software; computer software development used in 3D content/stereoscopic 3D projection/3D animation technology; design of computer-simulated model; design and development of metaverse content operation software; maintenance of metaverse content operation software; design and development of application software for metaverse; maintenance of application software for metaverse