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 Founded in 1988, is the largest professional manufacturer of public address (PA) products in China, with over 40,000 square meters of producing base and more than 500 employees, over 50 of whom are R&D engineers. DSPPA has taken the lead in the PA industry in China with 10 successful PA projects of 2008 Beijing Olympic Games and has undertaken the PA projects of Expo 2010 Shanghai China. DSPPA has been authorized to write The National Standard Technical Code for Public Address System Engineering, which is the first national standard for PA ......
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