Chem

Yunnan Energy's wet-process separator films — microporous PE membranes 5 microns thin — prevent internal short circuits in EV batteries while conducting lithium ions. The membrane that keeps cells safe.

Shanshan pioneered China's commercial lithium battery industry — first domestic artificial graphite anode (1999). Now covers anode, cathode, and electrolyte. The full electrode chemistry stack.

Avantor's J.T.Baker high-purity acids (HPLC grade) dissolve samples for trace metal analysis at ppt levels. Our semi-grade hydrogen peroxide cleans wafer surfaces — one metal atom kills a chip. Chemistry at the purity limit.