SINCERE INVITATION LETTER, 邀，Invitation to the 5th Global Conference on Science and Technology Development, 黄骅海盐发展大会邀请函, 会议时间：2025.08.30 AM 09:00, 会议地点：河北黄骅人民公园, ADD/河北黄骅人民公园博物馆, 17761520785, HOT LINE, 热/线/话