瑞灵石油龙虎榜：异常期间涨跌幅累计达到-75.00%，成交金额0.07万元

Core Viewpoint - Rui Ling Petroleum has experienced significant stock volatility, with a cumulative decline of 75% during an abnormal trading period, leading to its appearance on the stock market's watchlist [1] Company Summary - Rui Ling Petroleum Equipment Co., Ltd. specializes in the research, development, production, sales, and service of electric control automation systems and top drive equipment in the oil drilling sector [1] - The company's main products include electric control equipment, technical services, spare parts sales, and labor services [1] - The company was recognized as a "Specialized, Refined, Characteristic, and Innovative" small and medium-sized enterprise in Tianjin for the year 2021, with the certification issued on June 22, 2022, valid for three years [1] - On December 19, 2022, Rui Ling Petroleum was re-evaluated as a high-tech enterprise, with the certification number GR202212001850, also valid for three years [1]