Daming lens belongs to the mid-range and is a Korean brand. Daming authorized Vision Unlimited brand Daming's iris lens. Haqi is Daming's pinyin, not an authentic Daming lens. This is cheap. Daejeon Daming lens is currently acquired by TAG Heuer. There are Gai Shi, Yi Ou Ma and Ai Jing, and the Amelia series. Anti-counterfeiting is all dark marks. New lenses will be painted in dark marks, which are not easy to find.