On 19 April 2021, China Sonavox Group ("Sonavox") was officially listed on the Science and Technology Innovation Board of the Shanghai Stock Exchange (stock code: 688533). As the issuer's lawyer, Llinks provided legal services for Sonavox's offering and listing.

Sonavox is committed to using acoustic technology to improve the driving experience. It is a domestic technology-leading supplier of automotive acoustic product solutions. It has the R&D and design capabilities of acoustic products, system solutions and related algorithms. The products mainly cover car speaker systems, car amplifiers and AVAS, which are able to provide customers with comprehensive product solutions. Sonavox had realized the localization of car speakers much earlier. Through continuous independent innovation, it has strong competitiveness in the international market and has established stable cooperative relations with many well-known domestic and foreign automobile manufacturers and electro-acoustic brands. According to the 2019 data of Organisation Internationale des Constructeurs d'Automobiles (OICA), SAIC's car speakers accounted for 12.10% of the global passenger car and light commercial vehicle market.