Which company produces high yield of hafnium metal?

Nanjing Youtian Metal Technology Co., Ltd. Nanjing Youtian Metal Technology Co., Ltd. is a high-tech enterprise specializing in the production of zirconium and hafnium materials, with independent import and export rights. The company has a patent for the invention of crystalline hafnium production, and the production technology fills the gap in China. The purity of crystal hafnium produced is as high as 99.95%, so the production of metal hafnium by Nanjing Youtian Metal Technology Co., Ltd. is high. Hafnium, metal Hf, atomic number 72, atomic weight 178.49, is a shiny silver-gray transition metal.