中密控股：客户粘性高，存量业务流失较少，主要因客户关停或倒闭

Core Viewpoint - The company emphasizes the importance of mechanical seal products in ensuring the safe operation of installations, despite their low value proportion in total project investments [1] Group 1 - The value of mechanical seal products is low relative to total project investment but is critical for operational safety [1] - Customer loyalty is high; clients typically do not change suppliers as long as the products operate reliably without major issues [1] - Loss of existing business primarily results from client bankruptcies or shutdowns, which are infrequent due to the company's clientele being predominantly profitable enterprises [1]