Complex sentence: One of the largest contributing industries to pre-consumer recycling is the textile industry which recycles fibers, fabrics, trims and unsold "new" garments to third party buyers.
Split into simpler sentences: One of the largest contributing industries to the pre-consumer recycling paradigm is the textile industry. Pre-consumer waste by-products from the textile industry include, fibers, fabrics, trims and unsold "new" garments sold to third party buyers.