Complex sentence: In a first, composite materials, imported from Kockums, Sweden are being used for the construction of the superstructures, resulting in increased stealth, reduced weight relative to typical superstructures built with steel, anti-corrosive and fire resistant.
Split into simpler sentences: In a first, composite materials, imported from Kockums, Sweden, are used for the construction of the superstructures. This resulted in increased stealth features, reduced weight relative to typical superstructures built with steel, anti-corrosive and fire resistant.