Established in 2009, PMTC is a professional sound company that exports long-range sound wave transmitters ranging from general speakers to loudspeakers. Directional sound wave transmitters are supplied to road construction for traffic control. By promoting our case studies of use to overseas markets, we are now seeing positive results in the Southeast Asian market. In addition, we have launched various traffic control devices including traffic signs, automatic laser speedometers, lift search lights used in tunnel construction, and smart warning lights for traffic patrol cars, as well as directional sound wave transmitters, which is our flagship product. As a professional traffic control company, we are actively promoting our products to overseas markets.