I am Angela Lau in China Inpro Electronics Co., Ltd.; Our Company is capable professional audio and Public Address System manufacturer in China for more than 15 years with three brands INPRO in China, TLAUDIO and YANGZTE in Taiwan. We have two factories, one in China mainland, its website is: http://www.inpro.cn; one in Taiwan, its website is http://www.tlaudio.com.tw, please kindly check! We have hundreds of professional audio and Public Address items include Mixer amplifiers with build-in CD-CASSETTE-AM/FM RADIO, Professional power amplifiers, Portable PA Systems, all kinds of rack type amplifiers used in the whole project, ceiling speakers, column speakers, wall speakers, Wireless and wire microphones, Audio Conference Systems and so on.