海南瑞泽：公司商品混凝土的生产和销售全部在海南岛内

Group 1 - The core business of the company is ready-mixed concrete, with all production and sales occurring within Hainan Island [2] - The ready-mixed concrete industry in Hainan is currently experiencing significant competition [2] - The closure of the free trade zone has not had a substantial impact on the company's business or asset value [2] Group 2 - As the construction of the Hainan Free Trade Port progresses, tax policies and supporting measures will gradually be introduced [2] - The benefits from the Free Trade Port construction are expected to gradually release, potentially impacting the company's asset value [2]