Zhejiang Huayou Cobalt Co. and CNGR Advanced Material Co. signed pricing agreements with the electric-vehicle giant for supplies until the middle of this decade, according to separate stock-exchange statements from the companies. The deals are for ternary precursor materials — chemical cocktails that are key to storing energy in lithium-ion batteries.

https://electrek.co/2022/08/01/tesla-secures-battery-material-supply-deals-chinese-companies/?