长盛轴承：公司是盾构机领域客户的二级或三级供应商

Core Viewpoint - The company Longsheng Bearing (300718.SZ) has confirmed that its self-lubricating bearings can be utilized in the oil cylinders of shield tunneling machines, enhancing precision guidance and prolonging seal life [1]. Company Summary - Longsheng Bearing is positioned as a secondary or tertiary supplier in the shield tunneling machine sector [1]. - The company's products play a crucial role in preventing piston rod misalignment, which is essential for the operational efficiency of shield tunneling machines [1]. Industry Summary - The shield tunneling machine industry relies on specialized components such as self-lubricating bearings to improve performance and durability [1]. - Collaboration with leading manufacturers in the shield tunneling machine market is a potential area for growth for Longsheng Bearing [1].