'Trade' is the term we use. It used to be that such products were typically the more aggressive options out on the market. If there was a safe ingredient and a cheap one, they would be using the cheap one. We were talking about best bang for your buck, nothing else mattered. Unfortunately, with the boom in small brands, it started that certain brands actually bought the trade chemicals, poured them into their own bottles, put a new label and multiplied the price. Unfortunately this has become something of a trend and you will now find quite a few brands who are selling chemicals which are little different from the cheap trade offerings, as high end products. From out point of view, this is a bit of a shame because it does mean that many people are being (almost) conned into buying expensive products without actually getting anything special in the bottle. Sadly it is hard to know which brands are guilty because nobody will admit it and some of the worst offenders have some of the best marketing to rebuff any claims.
As a very simple demonstration, Mike is an advocate of using the least aggressive approach necessary to get the job done. The product type we are discussing is the product which will get the job done in the fastest time. IMO, this is not the sort of product which this forum community will really want to focus on, rather these products are intended for people who want as many cars through the doors as possible and have little expectation that the owners will be super picky.