Pasta (usually artisanal) that is produced through bronze-drawing has a rougher appearance than that obtained with Teflon, which allows it to be more porous and maintain the nutritional qualities of the final product.
The Teflon-drawn process is certainly faster and cheaper (very suitable for highly industrial production) and does not require high quality flour, unlike bronze-drawn pasta. The final product with Teflon has an intense yellow colour, but above all a smooth appearance, which is suitable for not very rich and elaborate sauces.