Changzhou Tianyin Electrical Appliance Co.,Ltd is a mainland-Hong Kong joint venture with JL World HK.Our company was established in March 1996, with more than 22 years experience in developing, producing and selling of buzzers, alarms, speakers such acoustic components. Our steady quality, fast response and professional technology make our products’ market cover all over the world and won good reputation in electrical industry.

we used to pay great attention to the products’ quality and stability, so we perform strict quality control began from material warehousing examination to each work...