No.548 (Yiyang) is the 7th type 054a,made by HP shipyard in Guangzhou.
That one in the first pic is the 9th.
And No.549(Changzhou) the 8th 054a is made by HD shipyard.
No.548 & No.549 are still on testing,haven't join PLAN yet.
Here is the 054a class:
East China Sea...