The gold content of Jinlifu brand is greater than 999.9. Hb is the code of Jinlifu brand, and Jinjin 999.9 is pure gold with a gold content greater than 999.9, so hb Jinjin 999.9 is Jinlifu brand with a gold content greater than 999.9. Pure gold 999.9 refers to the gold content above 99.99%, which is called pure gold, commonly known as "Sanjiu Gold". It is red and yellow, soft in texture and good in ductility.