Complex sentence: Carbon fibre production began in the late 1950s and was used, though not widely, in British industry beginning in the early 1960s, aramid fibres were being produced around this time also, appearing first under the trade name Nomex by DuPont.
Split into simpler sentences: Carbon fibre production began in the late 1950s and was used, though not widely, in British industry beginning in the early 1960s. Aramid fibres were being produced around this time also, appearing first under the trade name Nomex by DuPont.