... steel. 3.Competitive quality. 4.ISO9001&SGS. Stainless Steel Jewelry Line Feature:1.Material:304,302,316,202,201 etc..2 ... other national standard of environmental protection, non-fading color jewelry line.3.Surface Treatment: coated on the surface sliver ,dark brown ... : necklace , bracelet , crystal bead , crystal lamp etc.5.Package: Packaging can provide a small jewelry line coil, a 10M, 20M, 50M, 100M ...