kailo warm patch heat pad iron powder

Reduced iron powder is the most important raw material, which has the characteristics of loose and porous, large specific surface area, can easily absorb oxygen in the air, produce chemical reaction, release heat. The size of reduced iron powder is -80 mesh and -100 mesh, which can heat fast and take into account the heating time. High-end products can choose secondary reduced iron powder, low-end can choose a reduced iron powder, can effectively save costs.