I have purchased products from different companies line ups more than I can count on my hands. After all of them, shine supply has been the most incredible company to work with, but the chemicals themselves worked better than other brands I have used like Koch chemie, gyeon, p&s etc. those chemicals are fantastic but shine supply absolutely shocked me with how easy and incredibly powerful yet safe their chemicals are. For my mobile detailing business I swapped almost every product out to theirs.