The units surveyed for producer output prices in the industry are those with an activity (main or secondary) described in the branches of Sections B to E of NACE rev.2.
The units surveyed for producer price indices in r business services are those producing services described in sections H, I, J, L, M and N and in NACE rev.2.
The units surveyed for the Price Indices of Maintenance and Improvement of Dwelling are those engaged in divisions 43.2, 43.3 and 43.9 of NACE rev.2.
The units surveyed for import purchase prices at are companies importing industrial products within the meaning of the CPF, identified by customs data.