Complex sentence: The wing structure for the LS11 was redesigned, coming to resemble that of the LS9, and were built almost entirely of Carbon Fibre Reinforced Plastic (CFRP).
Split into simpler sentences: The wing structure for the LS11 was redesigned, coming to resemble that of the LS9. It is made almost entirely of Carbon Fibre Reinforced Plastic (CFRP).