1. Customized small-diameter low-flow structure: Optimized the folding height and mesh density, suitable for the oil circuit system shared by multiple small compressors, avoiding the problem of insufficient oil supply from a single unit during parallel operation due to excessive flow resistance.

2. Independent multi-level protection function: Can isolate the impurity circulation between multiple compressors, preventing the wear debris generated by a faulty unit from spreading to the entire shared oil circuit, thereby avoiding damage to other operating compressors.

3. Fully welded metal structure, zero pollution design: No need for chemical adhesives to fill materials, can resist long-term corrosion of high-temperature aged refrigerating oil and various refrigerants, avoiding secondary pollution of the system due to the detachment of the adhesive layer.