Brass filter include brass mesh, red copper mesh, and phosphor copper mesh. The number of filter holes will directly measure the quality of a filter mesh (specifically refers to filtering dust and particles). In addition to the strong effect of filtering molten material, the copper mesh also has the function of increasing the material flow resistance, slowing down the impact of gasoline or liquid on the entire machine, and also has a certain helping effect on the equipment. The copper mesh can be used as the filter in the car carburetor. In addition, the use of this durable copper mesh for the filter has the following three advantages: the corrosion resistance of the copper mesh, and copper as a common metal copper It has good corrosion resistance and is not affected by external disturbance and humidity environment.