Rainer – Webinar Powerpoint Template
https://elements.envato.com/rainer-webinar-powerpoint-template-EZLFLS7
Free 
Colorado – Conference Powerpoint Template
文件下载,https://downloads.cgguy.com/d/vianetsp/Preview/11ppt/2022/05/25/44706.471180556/cgguy.com_WU3KKM8.zip
Free