We deliver PH in 3 variations. PH: The original/base PH is a 9 digit tariff. Every HS code is 9 digits. The first 8 are from the AHTN. The last digit is either 0 ( Zero ) or a letter ( A,B,C etc ) This is how PH displays their tariff online. P2: This is the same as above except that 8 digit tariffs are not padded to 9 digits. So the codes are either 8 digits long or they are 9 with the last letter being A,B,C etc. X7: This is an 11 digit version of the tariff. The last 3 digits are ( 100, 200, 300 etc ) and correspond to the letters ( A, B, C ) Some clients have reported that these 3 digits are needed for electronic filing. In all 3 versions we have the same exact count of codes and descriptions.