Changzhou Yongyin Electronics Co., Ltd., established in 2005, has been dedicated to the research and production of electro-acoustic products. 

With advanced technology and high-quality services, the company has gradually become a leading enterprise in the industry. 

Covering an area of 20,000 square meters and employing 300 staff, the company specializes in manufacturing various types of buzzers, speakers, 

nickel alloy substrates, and electret microphones. Through the establishment of an advanced engineering development department, the company is able 

to meet the specific needs of different industries for electro-acoustic products.

The company has been at the forefront of environmental protection. As early as 2003 to 2004, all its products passed SGS environmental certification, 

and it now supplies a large number of RoHS-compliant electro-acoustic products. In 2005, the company established a cooperative relationship with Hitachi Appliances,

further enhancing product quality and management standards. In 2006, the company successfully launched a variety of small-sized SMD piezo buzzers and mobile phone speakers, 

initiating bulk supply collaborations with several mobile phone OEM companies. In 2008, the company developed an ultra-compact 5*5*1.9mm SMD piezo buzzer and obtained 

supplier qualification from Hitachi Appliances (HITACHI) in the same year. In 2009, it pioneered the development of the smallest 5*5*1.6mm SMD piezo buzzer in China, 

filling a domestic market gap. In 2010, the company entered the smart meter industry and was listed in the State Grid directory. In 2013, it moved into a newly constructed

 second-phase industrial park, expanding its production capacity fivefold. In 2016, the company secured orders from Philips and became a certified supplier for AUX (Aux Group). 

In 2018, it added 10 fully automated production lines to meet customer demands.

Currently, the company's products are widely used in:

- **Communication Industry**: Mobile phones, cordless phones, Bluetooth headsets, TWS earphones, 5G wireless phones, etc.  

- **Computer Peripheral Products**: Modems, digital cameras, uninterruptible power supplies, computer motherboards, laptops, 5G netbooks, etc.  

- **Smart Home Appliances**: Air conditioners, microwave ovens, coffee makers, soy milk makers, cooling/heating fans, electric deep fryers, etc.  

- **New Energy Vehicles**: T-BOX, in-car audio surround components, GPS speedometers, reversing radars, automatic driving/parking systems, ETC devices, etc.  

- **Medical Equipment**: Blood pressure monitors, blood glucose meters, ultrasound machines, heart rate monitors, etc.  

- **Banking and Securities Systems**: POS machines, bank keyboards, ATM machines, etc.  

The company takes pride in its advanced management systems, fast delivery, and competitive pricing.  

Our mission is: **Quality First, Customer First, Service First.**

Our direct or indirect customers (listed in no particular order) include: