1. black or machined surface 2. hot rolled or machined 3.enough stock 1.Processing Process: EAF+LF+VD ( necessary) UT+ Peeled +Turned + Heat Treatment (optional) 2.Chemical composition(for reference only): CSiMnP≤S≤CrMoNi0.38-0.450.300.60-0.900.0250.0250.90-1.200.15-0.30≤0.25 3.Application: various large-sized mirror plastic mould, precision plastic mould, like: cars accessies, home appliances, ...