美国采购需求：自动清洁吸尘器、HEPA除尘器、混凝土研磨吸尘器。

I'm in the market for 1-2 autonomous floor scrubbing robots specifically for our warehouse environment. We're looking for reliable models that can effectively handle the demanding cleaning tasks associated with a large space. Could you please provide details on the available options, including pricing and specifications? Additionally, if you have any used units available, we'd be interested in those as well. It would be helpful to know about the features that come with each model, such as battery life, size, and cleaning capacity. We're eager to find a solution that balances performance and cost efficiently. Looking forward to your prompt response with the relevant information!