When the jewelry is made by Shenzhen Fu Bao Jewelry Co., Ltd., it will be marked with the word BHD. Many jewelers take their products there or process them there. If it is also marked on it, it may be BHD. As long as the metal is real and has nothing to do with the brand, PD990 is PT950 in Baohengda, Chow Tai Fook is PT950 and the miscellaneous brand is PT950, which will not change the nature of the metal because of the brand.