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   The company is engaged in developing, producing and selling all types of electro-acoustic products and in the service of counsel. At the same time she do sound reinforcement, stereo and conference projects.

  The company's early name was Wangda Tongguang Technology Institute of the National 797 Plant. The National 797 Plant was a well-known national military electro-acoustic company of great importance, whose dominant products, especially the microphones, are famous in China. It is also one of the earliest companies in the world that produce series of microphones. Mr Wang Tianwang, the broad chair of the company is a senior engineer and a microphone expert, who graduated from Nanjing University in 1965. After graduation, he devoted himself to microphone design in the company and the forerunner, developed Hongyan and Wangda Hongyan series of microphones that gained a lot of national medals and certificates of merit for their splendid quality. Large quantities of products are used in many important occasions, such as Tiananmen, Zhongnanhai, the Great Hall of the People, State Department, the Political Consultative Parliament, CCTV station, local TV stations and so on. They were used by many national directors, such as Mao Zedong, Deng Xiaopeng,Jiang Zemin etc. Now they are used in province or city government offices, companies and plants, large guesthouses, schools, stadiums, country broadcasting stations, film creation centre and also explored to Europe, Africa and Southeast Asia.

  The company's microphone technology is advanced in this field of China. there are many types of microphones suited for broadcast, sound reinforcement in conferences,audio projects or electro-acoustic teaching etc.

  The series of handling microphones specially used in communications were developed in the early years. They have been used in military transmitter system for many years, for its satisfying quality. In the recent ten years, large quantities of products are used in civil communications, intelligent management, broadcast in fire fighting and so on. For example, the ODC-3 moving-coil microphone is warmly welcome by a number of users, as its quality is not lower than the foreign ones', but its price is much lower.

  Our company is in the service of professional sound reinforcement, school broadcast, stereo background projects, design and adjustment for speaking system in conferences. Our company cooperating with some famous audio companies at home or aboard, has accomplished a lot of audio work in many important projects, such as Qinshan Nuclear Power Station, the swimming stadium of Chinese and Japanese Friendly Interflow Centre, 21st World University Students Sports Meeting and Economical Forum in 21st Century held in Beijing International Restaurant etc. They are welcome in many fields, now.

  Friends in all fields and any one of wisdom, welcome to cooperate with our company and have an excellent future.
 
ADDRESS:NO2 JIUXIANQIAO ST.CHAOYANG DC.BEIJINGCHINA 100015
E-MAIL:wdhy@bjwdhy.com tel:010-64325597 010-64320407
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