stainless steel spider 1.Quality guarantee of ISOO9001 2.OEM service provided. 3.Material:200,300,400 series stainless steel spider1.OEM service provided.2.Surface:bright,polished,turn smooth(peeled),brush,mill,pickled.3.Size:200series.4.Surface:mirror,brush,unpolished pearl.5.Used for glass curtain wall6.Quality guarantee of ISOO9001