Changzhou To Billions Technology Co., LTD is mainly engaged in the sales of electronic products, a wide range of products, including: mechanical buzzer, piezoelectric buzzer, ultrasonic sensor, alarm and horn, etc., products are widely used, suitable for all kinds of sound devices.Our factory has automated production equipment, excellent technical management team and professional sales team. The company operates in strict accordance with the ISO system, strengthens the quality control system, and constantly strives to improve product quality, shorten delivery time, and reduce production costs to meet customer needs.In keeping with our mission, we will continue to be a familiar and trusted source for the electronic components you rely on, and we will continue to execute on our good practices and continuously improve our products and services for our supply chain partners.