Ok I just found that, there is a new system that's developed from Smerch.
How Does Russia’s Newest MRLS Stack Up Against HIMARS?
www.nationaldefensemagazine.org
Over 100 Km in range, but nothing close to A series rockets of China. We don't have to reverse engineer, as Pinaka ER has a 90 KM range. We just need to develop a 300mm rocket, with ranges of 100 200 and 300 Km. Our missile program has been a success over all, except Nirbhay. Now that has come off age too, through ITCM. So we can replicate in rockets too I feel
Sadly just needs proper push from you know who