10 years ago, I once passed a laundry and saw a guest in clothes talking to the laundry staff. I went to check and found that the staff was holding a 500ML bottle with a few drops of tetrachloroethylene in it, so I wiped the stains on the guests' clothes with my hands. I can't help thinking, what a terrible thing it is. One is that direct skin contact with tetrachloroethylene liquid will bring direct harm to human body, and the other is that stains on clothes are water-soluble and oil-soluble. How can it be treated directly and indiscriminately? Can the stain be removed? So, at that time, the slogan "I can't wash it, find the elephant king" sprouted as our slogan. What others can't wash off, we can definitely help you solve it.