Explore details about location 海南环线高速 - Hainan Ring Expressway. 海南环线高速 - Hainan Ring Expressway is a location situated within the 吉阳镇 alongside other areas such as 826县道 - 826 County Road, 学院路 - Xueyuan Road, 亚龙湾路 - Yalongwan Road.