Material:Ni-Al Bronze Boat propeller are used for yacht,boat or ship 1,Material:Cu1,Cu2,Cu3,Cu4,Ni-Al Bronze Stainless Steel2,Boat propeller are used for yacht,boat or ship3,We can supply products according to your drawing and samples4,We can design,research,develop and produce all kinds of machine copper alloy propellers by means of co-operating with many ship design,marine propeller5,While ...