For I what I have been told, Dongguan is mostly cater to Western/Canadian gentlemen. You pay $300 for 1 hr - which you will get two shots, CIM (first shot finish), shower together, FS, bbbj, rim and FS (second shot finish). No bbfs, cip and Greek.
However, your YMMV with each Asian SP - so unless you frequency visit this SP - she might do an awesome job for this Dongguan service for you.