The seal of Jin Dafu's gold is KTF, which is the English abbreviation of Jin Dafu. Steel seal is made of precious metal material and purity, and it is engraved in places that do not affect the appearance, such as bracelets and rings engraved on the inner wall, necklaces engraved on M-buckles, earrings engraved on sticks, earrings engraved on ear hooks and so on. When buying gold jewelry, you must pay attention to check the location of the steel seal, because there is no gold jewelry with steel seal, and there will be problems in subsequent sales.