We want to buy hot rolled steel coils Material grade: HSWR 678(S70-CSP) Wmm ABOVE Thickness: 0.5mm Length: Coil Quantity: 300-400 ton per month Best specifications: C: 0.67-0.75 Si: 0.17-0.37 Mn: 0.50-0.80 P: ≤0.035 S: ≤0.035 Cr: ≤0.25 Ni: ≤0.3 Cu: ≤0.25