Birko Birlesik Koyunlulular Mensucat Ticaret ve Sanayi AS engages in the manufacture of yarn products. It offers all types of yarn, textile materials for clothes and furniture, as well as carpets. The company was founded by Mustafa Altug, Sadik Kayhan, Tahsin Akinci, Muammer Ercan, and Hüseyin Ercan on February 8, 1972 and is headquartered in Nigde, Turkey.