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To address this issue, Guangzhou Petrochemical established a joint task force led by the Mechanical and Power Department, with members from relevant management departments and the First Chemical Department of the operating unit. The problem-solving team first analyzed the pump’s past operating conditions and data to identify the issues that arose during its operation, primarily including low medium temperature, tendency to vaporize, and high delivery pressure ； The device has a low net positive suction head, which imposes strict requirements on the equipment ； This pump is a multi-stage sack pump, and its maintenance process can easily lead to losses of ethylene product. After identifying the root cause of the problem, the task force developed a targeted modification plan, deciding to upgrade the rotor components in order to increase the pump’s capacity while leaving the motor and the outer casing of the pump unchanged. To ensure a rational and reliable design, the researchers conducted on-site surveys of the relevant flow-through components, re-evaluated the performance of the main flow-through components, and optimized and remanufactured the impellers to improve the cavitation resistance of the primary impeller and the efficiency of the secondary impeller. Furthermore, to ensure the long-term safe and stable operation of the equipment, they decided to replace the original austenitic stainless steel material with precipitation-hardening stainless steel in order to increase the stiffness of the shaft ； The original 5-axis connection structure has been changed to a 2-axis connection in order to improve the concentricity of the pump’s overall shafting and reduce the number of connections between the shafts. Everything is ready; only the right moment is missing. On November 8, taking advantage of the maintenance opportunity for the ethylene transfer pump G3101A, the task force carried out a comprehensive renovation of it. After the modification, the pump’s rotational speed increased by 25%, and the equipment’s efficiency fell within an optimal range. This not only ensured long-term safe and stable operation of the equipment but also met the high-load operating requirements of the downstream production units. As Zibo’s first e-commerce industrial base for physical enterprises, the China Pump Industry Network selects and supports a number of local pump manufacturers in creating B2B e-commerce platforms, with the aim of facilitating online transactions for all customers in the pump industry.