.Material: Cu1,Cu2,Cu3, Cu4, aluminium, stainless steel .
2.Size: as customers' request (D=2900mm in the above photo).
3.Blade: 3,4,5,6.
4.Certificate: ABS, BV, CCS, DNV, GL, KR, NK, etc (as the customers' request).
5.Processing: mirror or dull polishing.