Client Challenge
An Asian audio brand needed a flagship TWS noise-canceling earbud with requirements of 48dB deep noise reduction, 30-hour total battery life, and a sleek, ergonomic design. They faced challenges in precise assembly of acoustic components and ensuring stable Bluetooth connection performance.
Our Solution
We collaborated closely with the client’s R&D team to optimize the acoustic structure, using high-sensitivity microphones and custom-tuned speakers. We adopted automated precision assembly equipment to ensure the assembly accuracy of internal components (control within 0.02mm). We implemented full-frequency acoustic testing and Bluetooth connection stability testing for each finished product.

Project Outcome
The noise reduction depth reached 49dB, exceeding the client’s expectation. Total battery life was 32 hours, and Bluetooth connection stability rate was 99.8%. The product was launched globally and sold 100 thousand units within 3 months. We provided 24/7 technical support, reducing after-sales issues related to assembly by 82%.



Client Reviews:
“The TWS earbuds’ noise reduction effect and connection stability are beyond our expectations. TONGYONG’s professional acoustic optimization and precision assembly capabilities helped our flagship product gain great market recognition.”
— Acoustic Engineer of Asian Audio Brand

