These are labels on the fabric on sale in Belarus.
(This is a fantastic place to buy fabric and haberdashery equipment. That linen to the left for example, is top quality!)
I think it's hard to read the hand writing and understand what the abbreviation stands for.
But I would guess that it is about the width of the fabric, the quality and the price per metre.
ткань = fabric
скатерть = tablecloth
льняной
linen cloth — льняная ткань