Here is an excellent article about improving PLAN ASW
Excerpt
A decade ago, the PLA Navy may have had as few as a couple of dozen large Z-8 helicopters, progenitor of the new Z-18F. However, production was radically increased in the 2004-07 time frame, according to the 2014 covers story in Modern Ships, indicative of a new priority for naval aviation. The same article highlights the much more prominent surface search radar on the new helicopter’s chin. This radar is said to be capable of picking up submarine masts and periscopes at ranges of at least 40-70 km. A rather on the Z-18F appeared in another prominent defense magazine, 航空知识 [Aerospace Knowledge] in late 2014. This report seems to confirm a graphic that accompanied the Modern Ships report, which had previously suggested that the Z-18F could heft up to four ASW torpedoes—a significant improvement over its predecessor, the Z-8. Perhaps some skepticism is warranted on this point given perennial difficulties with Chinese helicopter engines. The same report also suggests that the Z-18F will likely have more sonobuoy dispensers than the U.S. Navy’s SH-60 Sea Hawk. The author says its size may imply that only the European EH-101 has comparable range and capabilities. According to this report, the
The proof... National Interest is not also bad as some here think...