is the official website of German Doma Group, one of the largest manufacturers of door control systems in the world, and now the automatic door series products also jumped to the first place in the world.

Headquartered in North Rhine-Westphalia, Germany, the Dorma Group is one of the world's largest manufacturers of door control systems, with 65 wholly owned subsidiaries in 44 countries around the world. In the field of door closers and movable acoustic partitions, Dorma is recognized as the world's No. 1, and now the world's No. 1 in the automatic door series. The Dorma Group has factories in many European countries, Singapore, Malaysia, as well as in China, the United States and Brazil. In the financial year 2004-2005 (June 30), Dorma had a turnover of 700 million euros and employed more than 6,100 people.

The current factory is located at No. 101 Tong Sheng Road, Industrial Park, with an area of over 7,400 square meters and an actual factory floor area of nearly 5,000 square meters. Dorma's Suzhou factory now produces door closers, floor springs, door hardware, automatic door series products and movable acoustic partition products.

The first products produced by the company were two-way hinges and slotted screws for doors. From the very beginning, the two founders adopted the highest quality standards for their products, and the principle "to provide the best quality at a good price and never let our customers down" has been a business philosophy that the company has maintained and reinforced every day. The brand trademark DORMA - the initials of the two founders' surnames - was registered in the German Patent Office in 1927.

Siemens Group Inc. is one of the world's largest electrical engineering and power companies with headquarters in Berlin and Munich. The company's predecessor was founded in Berlin in 1847 as the Siemens-Halske Telegraph Manufacturing Company. 1897 the company was transformed into a joint stock company, and in 1966 was officially named Siemens.

Siemens is a large international company with operations in more than 190 countries and approximately 600 factories, R&D centers and sales offices around the world. The company's business is focused on six main areas: information and communications, automation and control, power, transportation, medical systems, and lighting.

Siemens' business activities are focused on the global electrical market. The company's traditional strengths are its innovative capabilities, customer focus, global presence and financial strength. With more than 900,000 shareholders, Siemens is one of the world's largest listed companies, with more than 55% of the company's share capital raised outside Germany.

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Metro AG (Metro Supermarkets) is Germany's largest supermarket group, and its wholesale business, Metro Cash & Carry, is the world leader in the wholesale market. Metro Group is a constituent company of the German DAX stock index, the company was founded in 1964, headquartered in Dusseldorf. In the 2013 World Top 500, Metro Group was ranked 87th.

Ernst &Young (Taiwan: Chi-Yuan) is the world's leading professional accounting firm, once the world's third largest accounting firm, established in 1989, mainly provides audit, tax and financial advisory services.