On April 25, in the sanitary protection material industrial park of Do-Fluoride Chemicals Co., Ltd. (Hereinafter called "DFD"), flexible melt-blowing heads continuously sprayed white fibers and condensed into snow-white cloth. The first new production line of the company's annual output of 4,000 tons of meltblown cloth project went into operation smoothly, which means that the goal of producing 10 tons per day is a step closer.