The COVID-19 are rampant around the world, and the demand for protective equipment such as masks has surged among people around the world. As we all know, the melt-blown layer in the mask is the most effective in organizing the spread of germs. The current situation is that masks are easy to make but raw materials are hard to find. The twin-screw extruder for melt-blown PP granulation specially developed by our company for this purpose conforms to the antibacterial standard and helps all human beings overcome the epidemic and overcome difficulties together.