... ,Din931/933/975 2.Finish:Self Color,Black,Teflon Coating(PTFE) Black, White,Blueness Zinc,Nickel Plating 3.MS,CS,SS ... , DIN 7980.Finishing (Surface): Self Color, Xylan. Black ,Teflon Coating (PTFE) Black, White or Blueness Zinc (Cr.3 or Cr.6 ...