SK is better
Yancheng Jiewei Power is a wholly-owned subsidiary of Tianjin Jiewei Power Industrial Co., Ltd. in Yancheng. It mainly produces lithium-ion batteries as well as manufacturing, research and development. of new energy auto parts.
And Yancheng SK New Energy Co., Ltd. is a Fortune 500 company and investment company of South Korea's SK Group in Yancheng. It has a very mature lithium battery production. technology.