316L stainless steel is used in”heat ex changers”, “dyeing equipment”, “film washing equipment”, pipes, exterior materials for buildings in coastal areas, as well as watch chains and case of high-grade watches.
Seawater equipment, chemical, dyestuff, paper making, oxalic acid, fertilizer and other production equipment; photography, food industry, coastal facilities, ropes, CD rods, bolts, nuts .

201 stainless steel is austenitic stainless steel, 201 stainless steel With"acid"and "alkali resistance"and"high density", "no bubbles", "no pinhole polishing"etc.201 and 202 is used for to make "watch case", "watch band bottom with best quality"etc.It’s mostly used for make " tubes", This is the main usage of 201 grade.Also,used for building decoration.