We are the company that manufactures electronic siren and horn speaker for alarm or security products. We were establish in 1984. We have 4 main catalog such as electronic siren, horn speaker, piezo siren  and battery back-up siren. We have two ability to serve our customers. 1. Ability invents new products for our customer. 2. Ability offers our customer best services. Our products have many kinds of size and function at siren or horn speaker. If you are interesting our products, you can visit our web-site