Zarb is the subsonic C-602.
Last year, an unidentified customer has placed orders for the CM-302, shore-to-ship version.
Chatter on Chinese blogs suggests it is Pakistan. If that is true, it would be a good complement to the existing Zarb coastal defence system.
However, I do not expect PN to fit supersonic missiles like CM-302 to its surface ships. These are roughly thrice the weight of C-802A/RGM-84L Harpoon Block II and twice that of Zarb/Harbah.
CM-302 truck based launcher can carry 2 missiles.
Zarb, on the other hand, has 3 missile tubes.