Anping galfan 358 fence:
It is used widely in the modern perimeter and protect the surroundings at most.
Galfan wire: named Aliminume -Zinc alloy wire, 95% Zinc+5% Aliminume, zinc coating:250g/m2
It will last 30 years, not rust
358 fence:
Aperture: 75x15mm
Dimater: 4mm  5.0mm 
Size in your needs