As per the placard, the BP-12B shown here can also function as an anti-ship ballistic missile, making it one of three such systems exhibited at the 2018 Zhuhai airshow. The other two systems are the CM-401 and the A/MGG-20B or M-20B.
In total, China would have 5-6 different missiles of varying ranges that can target warships, from the 4000-km-range DF-26 to the SRBM-ranged systems shown above. It is not confirmed if the DF-16 is capable of targeting moving vessels.