Core Viewpoint - Tongyu Heavy Industry (300185) has established long-term stable partnerships with clients such as China Shipbuilding Industry Corporation, indicating a strong position in the maritime manufacturing sector [1] Company Summary - The company specializes in marine forgings, with key products including large marine shaft systems and steering system forgings, such as intermediate shafts, propeller shafts, rudder rods, rudder pins, and crankshafts [1]