Complex sentence: The airframe is mainly made of high-strength aluminum alloys and limited use of steel alloys or titanium; the horizontal stabilizer, fairings, main landing gear doors, rudder and elevators, radomes, rear pressure bulkhead and winglets are composite materials.
Split into simpler sentences: The airframe is mainly made of high-strength aluminum alloys and limited use of steel alloys or titanium. The horizontal stabilizer, fairings, main landing gear doors, rudder and elevators, radomes, rear pressure bulkhead and winglets are composite materials.