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I'm looking to get a quote for 30 units of a hydraulic floor jack. The specs I need include a lifting capacity of 3 tons (6,000 lbs) with a minimum lift height of 3.5 inches and a max of 20 inches. I prefer a model featuring all-steel welded construction and a dual pump system for quick lifting. It should have a built-in safety bypass valve and swivel casters with foam rubber handles for ease of use. Please provide your best price and estimated lead time for this order.