Gerontech and Innovation Expo cum Summit (GIES) 2020 19 November 2020 樂齡科技博覽暨高峰會 2020 — Gerontech and Innovation Expo cum Summit (GIES) 全文を読む → Event 繁中 EN この引用について 関連事業 seniordeli This citation references Raymond Chau Yik-Chun and seniordeli .