Hand-torn steel is called ultra-thin steel, so thin that it can even be torn off by hand, so it is called hand-torn steel. "Hand-torn steel" from Shanxi Taiyuan Iron and Steel Group Co., Ltd. is a stainless steel foil produced by Taigang, with a thickness of 0.02 mm, only a quarter of A4 paper, and a width of 600 mm. In the past, only Germany, Japan and other countries could produce "hand-torn steel", and it produced a narrow "hand-torn steel". The 600-mm-wide "hand-torn steel" developed by TISCO fills the gap in China and attracts wide attention at home and abroad.