... , mild steel , A2, A4 , ... spring steel documents: CO , CCPIT, FORM A , B/L, invoice , ... spring steel Packaging & DeliveryPackaging Detail: 20- ... HDG...² Size: M5-M30/42² Documents: Packing list, Invoice , B/L, CO, FORM A, Quality certification or what you want² Package: 25 ... 30% , 30% payment before the producing , 70% against the B/L copy² Usage : mainly used in building and engineerCustomers from ...