A nut that never loosens was invented abroad. Does China have related invention patents?

Never loosening nuts is a foreign invention. Are there any related invention patents in China? Yu Wenlong, who sells bolts, screws and nuts, thinks that nuts that never loosen have been invented abroad, and there must be related invention patents in China, but the products produced can't be compared with others. At present, there are few practical nuts that never loosen in China. Yu Wenlong, a fastener consultant, thinks it's best to look up relevant information yourself. Everything I got online was fake. If you don't know how to pretend, you can answer casually. It is simply false or deceptive, which will directly mislead you and even hurt you.