The only difference between the two is that shark fins are the original shark fin pins, and when treated they are shark fin needles. Shark's fin issued is shark's fin needle, because the shark's fin has the same shape as the needle, the front end is pointed. However, there are many unscrupulous merchants in the market who use powdered gravy to create artificial shark fin needles to fake and sell them as shark fins. Shark fins are often referred to as "shark fins". As one of China's traditional precious food, it was first mentioned in "Song Huayao", and is one of the precious seafood. Shark fin is also known as shark's fin, shark shark's fin, sand shark's fin, and golden silk vegetable, etc. It refers to the fine filamentous cartilage of shark's fins, and is made by drying shark's fins from its chest, abdomen, and tail, etc. According to China's relevant regulations, shark fins should not be sold as artificial shark fin pins. According to China's relevant regulations, dishes made from protected animals such as shark fins are not allowed to be served in official receptions.