加拿大采购需求：自动清洁吸尘器、HEPA除尘器、混凝土研磨吸尘器。

I'm interested in your concrete dust extractor and would like to know the pricing details. Could you provide me with the cost for this model? Additionally, if there are any discounts for bulk orders or special features that enhance its performance, please include that information as well. Also, I'm curious about the lead time for production and shipping, as well as any warranty or after-sales service options you might offer. Looking forward to your prompt response so I can make an informed decision. Thanks!