Tank cleaning detergent covers more then 140 types of tank cleaner.  Alkaline Safety Liquid, Hcf, LAC, Edge Cleaner, RXSOL NEW ORG, METAL RUST STAIN REMOVER,  Bunker Cleaner, CTC VLC, DI water, Methanol, p Xylene, Butyl Cellosolve, Buffer Cleaner, Veg oil cleaner, Inviro Clean, Advance Multipurpose Tank Cleaner etc. And may more Tank cleaners are in this group.