... requirements plating iron curtain ring,iron curtain loop 1. rod:single and double;extensible material:iron,resin,acrylic diameter:12mm,14mm,16mm,19mm,22mm,25mm ... etc Inner packing:PVC packing,PET packing,Shrink packing and polybag Outer packing:carton 6 sets per carton iron curtain ring,iron curtain loop,iron ...