"存货报告单" can be translated into English as "Inventory Report" or "Stock Report".
"Inventory Report" is more commonly used in business and accounting contexts, referring to a detailed document listing the quantities, values, and other relevant information about a company's inventory.
"Stock Report" can also be used, especially when referring to a report specifically about the stock or items held in storage, though it may have a slightly broader or more general connotation in some contexts.
In most formal business or accounting settings, "Inventory Report" would be the preferred and more precise term.