For the apparel sector, SFMS includes all the items covered under chapters 61 and 62 of the US HarmonizedTariffSchedule (Articles of apparel and clothing accessories, knitted or crocheted).
The data used in FIGURE 1 and FIGURE 2 is based on the ten-digit HarmonizedTariffSchedule (HTS), the most precise measure of solar cell and module imports available (specifically 8541.40.6020&6030).