This is a photo of the Thunder Sky Winston Battery factory around the New Year Eve 2021.
The most successful product of Thunder Sky Winston Battery (TSWB) is the monolithic 1000AHC cell. TSWB is the only producer in the world that can flawlessly manufacture such large cells in huge industrial quantities.
The other “so called TOP manufacturers” usually end up with 200AH, 280AH, or max 300AH cells.