http://pastport.jp/user/haisan ja-JP Guangzhou Haisan Amusement Technology Co., Ltd.（stock code: 873107）, specializing in water park planning, landscape design. 2020-05-27T15:17:18+0900 http://pastport.jp/user/haisan/timeline/Guangzhou%20Haisan%20Amusement%20Technology%20Co.%2C%20Ltd. haisan http://pastport.jp/user/haisan/timeline/Guangzhou%20Haisan%20Amusement%20Technology%20Co.%2C%20Ltd.