Japanese supplier Aisin Seiki says the European Union's eastward expansion opens new opportunities for European growth.
"We want to expand our customer base in Europe beyond Toyota," said Aisin Chairman Akihiro Wada.
Toyota and Toyota Industries own 30 percent of Aisin, which makes navigation and safety systems, drive-trains and engine and body parts.
Toyota group companies accounted for 66 percent of Aisin's sales in the year ending March 31, down from 73 percent a year before.
Aisin expects the rapid growth of the auto industry in central Europe to help its European expansion plans.
The Japanese supplier opened a factory in Pisek, Czech Republic, a year ago.
The plant makes engine parts such as oil and water pumps. It will be expanded to six times its current size by next September.
Aisin also has production sites in Belgium and the UK. Next April it will open a plant in Turkey and Wada did not rule out adding a fifth production site in Europe.
Aisin aims to increase its Euro-pean sales by 63 percent to E1.3 billion by 2006 from E800 million for the year ending March 31.