1. Material: Alloy 2. Surface:polish, black, HDG, EG, PAITED 1. Material: Alloy2. Surface:polish, black, HDG, EG, PAITED3. Manufacture standard: ISO,DIN,BS,JIS,GB*4. Strength grade: G100, G80,G70,G63, G50,G405. Size: 6mm, 6.3, 7, 8, 10,11,12,....38mm, 42mm6. Packing: Gunny Bag/Wooden Case/Drum G80 lifting chain