A股海南板块集体下挫，罗牛山、海马汽车、京粮控股跌超8%，海南瑞泽跌超7%，海汽集团、海峡股份跌超6%

Core Viewpoint - The Hainan sector in the A-share market experienced a collective decline, with several companies seeing significant drops in their stock prices, indicating a bearish trend in the region's market performance [1]. Group 1: Company Performance - Luo Niu Shan (000735) saw a decline of 8.82%, with a total market capitalization of 10.5 billion and a year-to-date increase of 37.07% [2]. - Hai Ma Automobile (000572) dropped by 8.68%, with a market cap of 13.7 billion and a year-to-date increase of 98.80% [2]. - Jing Liang Holdings (000505) fell by 8.08%, with a market cap of 5.212 billion and a year-to-date increase of 16.75% [2]. - Hainan Rui Ze (002596) decreased by 7.66%, with a market cap of 5.531 billion and a year-to-date increase of 36.16% [2]. - Hai Qi Group (603069) declined by 6.70%, with a market cap of 6.867 billion and a year-to-date increase of 19.00% [2]. - Hai Xia Shares (002320) fell by 6.41%, with a market cap of 23.8 billion and a year-to-date increase of 63.86% [2]. - Jin Pan Technology (688676) decreased by 5.38%, with a market cap of 38.6 billion and a year-to-date increase of 105.87% [2]. - Kaiser Travel Industry (000796) dropped by 4.24%, with a market cap of 9.783 billion and a year-to-date increase of 50.62% [2]. - Kang Zhi Pharmaceutical (300086) fell by 4.15%, with a market cap of 4.524 billion and a year-to-date increase of 102.86% [2]. - Hainan Mining (601969) decreased by 3.88%, with a market cap of 20.3 billion and a year-to-date increase of 45.46% [2]. - Hainan Expressway (000886) dropped by 3.34%, with a market cap of 6.289 billion and a year-to-date decrease of 18.15% [2]. - Hainan Airport (600515) fell by 3.20%, with a market cap of 51.9 billion and a year-to-date increase of 20.11% [2].