Cheng Juan Technology Co., Ltd. (CJTech) was founded in Taiwan in 1980, Over the years experience in the design, manufacture and export of Public Address Loudspeakers world-wide. Our brand "STARSONIC" has engaged a very good reputation worldwide.
CJTech is continually improving the product process & structure, and obtaining the cost-effective & high quality. Our products have always had an excellent reputation for high quality in the commercial sound, communication and alarm systems.
In these years, we specialize to OEM and develop Hi-power speakers & Siren speakers for the professional alarm systems. CJTech have a dynamic team of skilled designers, engineers and technicians to create the products for our customer need.
We believe all our staff will always offer the profession product and service in the future.