Hydraulic oil plays a crucial role in hydraulic systems, providing pressure transmission, lubrication, cooling, and sealing. Inappropriate hydraulic oil selection is a major cause of early system failures and decreased durability. Hydraulic oil should be selected according to the grade specified in the accompanying instruction manual. In special circumstances where substitute oil is required, its performance should be as similar as possible to the original grade. Different grades of hydraulic oil should not be mixed to prevent chemical reactions and performance changes. Dark brown, milky white, or foul-smelling hydraulic oils are deteriorated and should not be used.
For the construction machinery industry, adjusting the product structure during development is key. This should begin with meeting domestic market demands while simultaneously developing products competitive in the international market. For existing market-leading products, new varieties should be added to meet the diverse working environments of different regions and climates. Product development should focus on international market standards and the needs of domestic construction projects and rural development, conducting thorough user surveys and market analysis. Furthermore, special attention should be paid to the structural adjustment and development of engines and key components for construction machinery; improving the quality of supporting components is a key to product quality improvement.
