... by LR,ABS,BV,GL,DNV,etc 2,12-13 USD/KG 3,Used for marine boat propeller,ship propeller 5, ... Fixed Specifications1,Approved by LR,ABS,BV,GL,DNV,etc 2,12- ... 13 USD/KG 3,Used for marine boat propeller,ship propeller 5, ... products has been approved by ABS,BV.CCS,DNV,GL.LR,NK,etc., and abtained the authentication certificate of Quality ...