Sönmez Transformer Company STS manufacturers distribution, power, special transformers and reactors. The Company was founded in 1976 and is located in Gebze which is close to Istanbul. The modern transformer production plant was set up over an area 5000 sq.m., and is a large plant for special transformers. The plant makes use of advanced transformer/reactor manufacturing technologies based on know-how provided by ourself. The plant employs a staff of about 50 people. The plant is divided into the following department: winding, core production, assembly drying vacuum fill oil, modern test laboratory, finishing department and quality assurance department.