The British public may have voted for Brexit in June 2016, but British industry used the Japan International Aerospace Exhibition to underline its strengths and commitment to long-standing overseas partners and markets.
S The British public
V [may have voted]
[for] Brexit [in] June 2016,
S British industry
O the Japan International Aerospace Exhibition
V [to underline]
O its strengths [and] commitment
どんな→[to] (long-standing overseas) partners [and] markets.