id	author	title	date	pages	extension	mime	words	sentence	flesch	summary	cache	txt
cet-15046		cet-15046		6	.pdf	application/pdf	4231	189	48	Using thermal insulation materials has become crucial to ensure the energy-efficient operation of buildings. Currently, over 90 % of thermal insulation materials are made from non-renewable sources, requiring significant fossil energy consumption during production (CMI, 2020).	cache/cet-15046.pdf	txt/cet-15046.txt