Leoni AG, the leading an provider of cables and wiring systems to the automotive and other industries, Monday inaugurated its fourth factory in China.

The plant is part of the German firm's plan to double local wiring systems turnover to 400 million ros ($552 million), a company executive said.

Located in Langfang, province, the plant will supply wiring harnesses for Benz Automotive Co Ltd, the joint venture between Daimler AG and Chinese partner BAIC Group, which has a planned capacity of 200,000 cars per year.

"We are happy to open this modern plant in Langfang, delivering high-quality products to BBAC," said Andreas Brand, who oversees the Wiring Systems Division for Leoni.

"We are pleased to extend our business in China together with our successful customers."

The company's expansion into China is a primary driver in its globalization, which itself is key to long-term growth, Brand said.

Leoni will invest 30 million euros in buildings and equipment for the new production site. It has started the ramp-up phase for Mercedes C-Class and later will produce wiring systems for its GLA SUVs and GLK-Class crossovers.

Taking into account the complexity of electrical distribution systems for premium passenger cars, the new plant will process about 3 million meters of automotive cables, 1.5 million connectors and thousands of components per day, and combine them to create complete wiring systems.

Besides the Langfang plant, Leoni has facilities in Shanghai, Jining and Penglai in province. All the plants produce harnesses and wiring systems for the automotive and commercial vehicle industry, mainly supplying customers in Europe and America.

The Leoni Group also has six other production plants in China making wiring products for medical and household sectors, among others. It anticipates local consolidated sales of about 450 million euros this year. Since 2012, China has been Leoni's biggest market in terms of sales volume after the company's home country.