Our company is a collection of research, development, production and sale. Public address series and conference system products are our main products. Based in the frontier of southern Chinese economy and technology base-Shenzhen, our company was founded in 1999. Adhering to the constant innovation, we have made great success in the industry and created a brand with a good reputation-OBTPA. Our company sticks to the faith that we should do practical business and provide the best products and ...