If you want to smooth the surface of the utensil, you can use ethyl acetate to treat the polylactic acid material. Prepare an appropriate amount of ethyl acetate first, place the polylactic acid utensil lightly in it, and wait for a while, during which the ethyl acetate interacts with the polylactic acid to gradually flatten the rough surface of the utensil. After taking it out, when the ethyl acetate evaporates, the surface of the utensil will be smooth. This is the way to smooth the surface of the polylactic acid utensil, and use ethyl acetate to act on the polylactic acid to achieve the purpose of smoothing.