It`s not that uncommon with super concentrate products. Gyeon released it`s Gyeon Essence car soap which is the concentrated bathe car soap and has the dilution of 1:2000. Some of the car soap in EU has those kind of dilutions too. Bilt Hamber Auto Wash and Carchem Luxury Car Schampoo Concentrate are 2 high quality car soaps that comes to mind. And most APC over here are way more concentrated than 1:10 too.