潜江天门市壳牌齿轮油-空压机油供应链空压机油是专门给空气压缩机用的润滑油‌，主要用来减少机器摩擦、保护设备，同时起到冷却、密封、防锈和缓冲的作用，不能用普通汽车机油代替。According to the type of compressor, compressors with different structures require different types of oil.

　　Reciprocating (piston type): commonly used in three grades: L-DAA, L-DAB, and L-DAC, corresponding to light, medium, and heavy loads respectively.

　　Rotary type (screw type): commonly used in three grades: L-DAG, L-DAH, and L-DAJ, also differentiated according to the weight of the load.

　　Food grade: If used in industries such as food processing and pharmaceuticals, it is necessary to choose food grade air compressor oil that has passed NSF H1 certification and is allowed to come into accidental contact with food