泰国采购需求：洗车机，全自动洗车机，自动洗车机，自动洗车，单臂洗车机，非接触式洗车设备

I'm reaching out to request the user manual for the product I currently own. I've been using it for a while, and I'd appreciate having a copy of the manual for reference. This would help me better understand all the features and ensure I'm using it to its fullest potential. Additionally, I'd like to inquire if there are any updates or upgrades available for this product, specifically related to the waterfall feature. If there are any improvements or new versions, I'd be interested in learning more about them. Thank you for your assistance!