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About Us

Company Overview

LONGSUN is a leading manufacturer and provider of acoustic components since 1999. We specialize in R&D, design, manufacturing and sale of our main products below to international market:


  • Ultrasonic Transducer
  • Proximity Switch
  • Rocking Armature Transducer
  • Piezoelectric Buzzer
  • Dynamic Receiver and Transmitter
  • Microphone, including carbon microphone
  • Loudspeaker
  • Siren and alarm Transducer
  • OEM&ODM products     


and so on, LONGSUN who consists of ultrasonic transducer factory, loudspeaker factory and piezoelectric buzzer factory, with total employees over 2000, more than 20,000 square meters production areas, all are managed under ISO 9001: 2008 certificated system, meanwhile, with our strong R&D team and up-to-date production equipments based in our factories, we provide our clients with the high-quality products and efficient service to meet their different requirements.

Our ultimate goal is to provide best acoustic solutions and zero-defect quality products to meet our customer's satisfaction and beyond their expectations to reach win-win situation.


Business Philosophy: 

R & D: upgrading technology, creating the requirement, sharing the profit;
Quality: mutual cooperation, quality upgrade, customer satisfaction; 
Service: reasonable price, delivery on time, service in time. 

We believe our success comes from the trust of our customers!  For more information, please email or call us, you will get our response within 24 hours.


Here is attached video for piezo buzzer production for your reference below, please find and give us comment if any: