Ningbo Ronbay New Energy Technology Co Ltd, usually known as Ronbay Technology, is a Chinese company and one of the world's biggest manufacturers of cathode active material for lithium-ion batteries.
[1] Ronbay was founded on September 18, 2014[2][3] in Zunyi[4] by Bai Houshan and Liu Xianglie.
[1] Ronbay's main production sites are in Ezhou, Xiantao and Zunyi in China, as well as in Chungju, South Korea.
[4][7] In 2022, the company began building further production sites in South Korea to circumvent U.S. trade restrictions put in place by the Inflation Reduction Act.
[11] In 2024, LG Chem sued Ronbay's South Korean subsidiary, Jaesae Neungwon, alleging it had infringed on five of LG Chem's patents for NMC materials.