ASW MLRS on PLAN ships

I noticed that this article contains some good info and specs on PLAN ASW MLRS. Perhaps we can add these data to the Sinodefense web pages?

http://www.afcea.org/signal/articles...=509&zoneid=30

China has charged forward with surface ship ASW. Prior to 1985 new-construction warship designs, China’s 15 Luda destroyers and 31 escorts had Soviet-designed World War II-era high frequency (HF) searchlight Tamir sonars, Soviet BMB-2 depth charges and two Type 75 12-barrel mortars with a 2,500-meter range. In 1975, the Jianghu III series of new escorts introduced Type 81 copies of Soviet RBU-1200 five-barrel mortars. The 3,200-meter range of the Chinese Type 81 nearly tripled the Soviet RBU range. It is a mistake to assume that Chinese copies of foreign equipment do not have improved capabilities. The six follow-on Jiangwei frigates improved the Type 81 with two six-barrel mortars with a longer 5,000-meter reach, and these were called Type 87.