BOZTAŞ CİVATA SANAYİ ve TİCARET LTD. ŞTİ entered to the sector by manufacturing and making sales in 1982. This company started to make manufacturing works in 200 square-meters atelier and then removed to 500 square-meters place in İkitelli. Now, it is providing services in the new factory located in Karabaş Village where a 3000 square-meters outdoor area and a 2500 square-meters indoor area are located. This company manufactures 6000 tons screw per year under a 500 tons production capacity in the new factory.