If American enterprises want to file trademarks at China Customs, they need the American side to provide their company qualification certificates, that is, China's business license, as well as the registration certificate of the registered trademarks, the licensing agreement or power of attorney of the American side, etc. You can entrust a domestic agency to handle other documents and operations for you. We are also a professional trademark agency. I can help you with the US customs filing in China, as long as you provide relevant documents. If you need further consultation or help, you can contact me at any time for detailed communication.