美国采购需求：便携式高压氧舱、便携式高压氧舱、高压氧舱部件、便携式高压氧舱、高压氧帐篷、带浓缩器的高压氧舱

I'm interested in your 2ata soft chamber that comes equipped with both an oxygen concentrator and a pump. Could you please provide a detailed quotation, including the unit price and any available bulk purchase discounts? Additionally, I would like to know the estimated delivery time and the total shipping costs to the USA. Moreover, can you clarify if there are any applicable tariff fees or import duties that I should be aware of? Your insights on this would help me in planning the logistics for procurement. Looking forward to your prompt response!