1.Estimated additional costs. The Spanish authorities shall send a summary report containing sufficient data to evaluate whether the additional costs, which increase the cost price of local production in comparison with products produced elsewhere, exist. The information provided in the summary report shall include at least the following information, where such information is available: costs of inputs; costs of over-stocks; equipment costs; additional labour costs; and financial costs. That data must be provided by, at least, a reference to the product categories of the Harmonised System Headings, according to the four digits of the Combined Nomenclature.