Semko The company was founded in 1975 in the city of Seinäjoki under the name Semtu Oy / Seinäjoki plant. In 1995 the plant grew into an independent company and was renamed Semko Oy of the Semtu plant. In 2003 the name of the company was changed to Semko Oy. The subsidiary of the association, Semko Eesti Oü, is located in Estonia. Semko Oy operates in the construction industry and manufactures fasteners and fittings for concrete structures. The range includes concrete lifters, light steel structures as well as roadside railings and transport portals. The products manufactured by the company comply with the requirements of the ISO 9002 standard. Products are manufactured mainly by welding technology. A significant part of the production is carried out on automated lines. Semko Oy's production and products are approved by the concrete association Suomen Betoniyhdistys. The company operates under a license and under the control of the Finnish Certification Bureau SFS-Sertifiointi Oy. The financial turnover of the company in 2005 was approximately 4.2 million euros. The number of staff is 25 people. SEMKO LTD | Tehtaantie 8 | 60100 SEINÄJOKI | Phone: +358 0207288350 | Fax: +358 0207288360 (office)