Polyester spun colour yarn RFQ from Poland

We are looking for Polyester spun twisted yarn made form staple fibers dyed in raw material.
Yarn designed for weaving looms (for production of upholstery fabrics). Colour: black and grey Count: dtex 500 Quantity: ca. 10.000 kg/quarter (one container 20’) (ca. 90% of black and 10% of grey colour)