You are right about what us outsiders know or don't know. Only the the export material give actual specifications.
The land-based export FD-2000 has a max range of 125 km -
, while the minimum altitude is 25m which not suitable for a naval missile. HHQ-9A minimum altitude has to be 15m or less. As far as I know, 120 km has been the accepted value for outsiders since the launch of the 052C. The missile itself is smaller than the S-300PMU -
,
Don't forget there are multiple HQ-9 based variants. Thats why you get different values for range and other specifications. Ground based there are at least 2. HQ-9A and HQ-9B and naval you have the HHQ-9A.