This quality inspection upgrade focuses on the two cores of safety performance and durability and stability. For hydraulic lifting equipment, the factory has newly added a pressure overload test process to simulate high-intensity and overload conditions, strictly verify the pressure-bearing capacity, structural strength and hydraulic stability of the equipment, and eliminate safety hazards such as lifting jams, pressure relief and leakage. For lubricating tools such as grease guns and high-pressure oilers, we have comprehensively strengthened the pressure and sealing sampling inspection standards, focusing on troubleshooting problems such as oil leakage, pressure relief, and seal failure under high-pressure working conditions to ensure that products are durable in high-frequency maintenance scenarios.