May I use a singular form or a plural form before a clause starting with "for each"?

Question

In this sentence, may I use the singular "due date" or the plural "due dates"?

Please let us know your earliest possible due dates for each product.

Each product should have only one due date. But as a whole, there should be multiple due dates as we have multiple products.

successive suspension · Answer

Please  let us  know your earliest possible  due dates  for each  product.

Since you say each product it should be  possible due date even though multiple due dates for multiple products.

Each product has only one due date. Due dates mean each product has different due dates.

One Answer