We are seeking comprehensive product information for private label collaboration. Require full product catalog and price list covering all models of speakers, headphones, and soundbars.  

Need detailed specifications about:  
- Minimum Order Quantity (500+ pieces per category)  
- Production lead times  
- Customization capabilities (branding/packaging options)  
- Technical specifications for each product type  

Looking for manufacturers capable of supporting long-term partnership with bulk order capacity. All communication should be conducted via email. Please provide complete documentation including certification details and OEM/ODM service terms.