AOG it has long been regular for both white and black gangs to commit this crime not 'on this scale' but on a bigger scale.
If you believe there is something unique about Asian "paedophile" gangs, you are right in one particular. It appears that these gangs operate to some extent to provide for the middle-aged men, who conspire, and act, with the others. In all other respects they do not differ in method or practices from the typical gangs; not 'Asian'; in London and other big cities who have been befriending girls, by one of them being the boyfriend, and then treating them as the sexual property of the gang members. That has been going on for decades.The girls are usually underage or just above.The perpetrators, the gang members, are young men.
And pimping is hardly unknown either, where innocent, often underage, girls fall into the clutches of someone, generally much older, middle-aged, who has them work in prostitution. This is a big problem, and often the work of organized crime (and not 'Asian' organized crime).
Incidentally, you describe them as 'paedophile'. The victims seem to be simply under the age of consent, not prepubescent children.