1. Standard rotating thread design: It perfectly matches the original filter base, allowing for quick manual tightening and replacement without the need for additional tools, thereby avoiding leakage issues caused by incompatible interface sizes.

2. Built-in safety bypass relief valve: When the filter element becomes clogged and the pressure difference reaches 1.2 bars, the valve will automatically open to ensure uninterrupted oil flow and prevent the compressor from being damaged due to dry friction.

3. Composite double-layer filter material: Combining high-density glass fibers with stainless steel mesh, it achieves both ultra-fine impurity interception and high flow capacity, significantly enhancing the dirt retention ability of equipment operating continuously for 24 hours under medium load conditions.

4. Integrated anti-corrosion shell structure: The shell is made of rolled rust-proof steel and is manufactured through a sealing molding process. The internal filter elements do not use chemical adhesives and will not dissolve or fall off under alternating high and low temperatures, effectively eliminating the risk of secondary pollution to the refrigeration system.

5. Integrated sealing design: An integrated rubber sealing ring is pre-installed on the filter element end cover. The installation is a single step process without the need for separate assembly of gaskets, thereby reducing the problem of lost components during on-site maintenance.