QualificationFocusing on the one-stop service of research and development, design, production, and sales of mainstream audio products!
Company business license 
3A Bronze Medal for Credit Enterprise Certification 
3A Integrity supplier unit 
3A business demonstration unit 
3A Quality Service Integrity Unit 
3A Contract-abiding and trustworthy unit 
3A credit rating unit 
High-tech enterprise certificate 
Green environmental protection product 
Enterprise credit 3A 
China Chengxin manager 
China Chengxin entrepreneur
