Meltblown fabric is the core material of mask. The main material of meltblown fabric is polypropylene, and the fiber diameter can reach 1 ~ 5 micron. The ultra-fine fibers with unique capillary structure increase the number and surface area of fibers per unit area, so that the meltblown cloth has a very good filtration, shielding, insulation and oil absorption. It can be used in the fields of air, liquid filter material, isolation material, absorbing material, mask material, heat preservation material, oil absorption material and wiping cloth etc. .