Abstract: This paper presents the latest advancements in the production of SFLH (Steel Foil Lacerable by Hand,SFLH) and BMF (Blown Metal Foil,BMF) using rolling techniques. It defines the thickness ranges for various thin strips, super-thin strips, ultra-thin strips and foils. The process characteristics of rolling SFLH and BMF under conditions approaching the theoretical MRG (Minimum Rolling Gauge,MRG) are discussed. Several formulas for calculating MRG are introduced and compared, including the Stone formula, the LTAR formula which accounts for speed ratio differences, and the Xiao-Hong formula based on Fleck′s ultra-thin strip rolling theory. Approximate estimation formulas and curves illustrating the relationship between work roll diameter and MRG under both synchronous and asynchronous rolling conditions are provided, along with roll diameter, thickness, and speed ratio diagrams. Related theoretical issues such as the suitable rolling thickness of sheet and strip materials,and the mechanical model of negative-gap rolling are also discussed. Typical applications of SFLH and BMF in copper foil, aluminum foil, stainless steel foil, as well as in the electronics and semiconductor industries, new energy sectors, and precision structural component micro-manufacturing are introduced. Finally, future development directions for rolled BMF are outlined.