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Roller Shutter spring

1. Material: 65Mn
2. Finish:  hot tempered & hardened, black,blue,yellow, round edge
3. Size:1.0 -1.6 mm thick  40-100mm wide  3-6m long
4. Packing:  10pcs/carton   oiled, plastic film, carton, iron pallet

Tel: 0086-539-8753666 
Fax: 0086-539-8762888