The Ministry of Public Security (MPS) has released a list of approved Professional Supervisory Units (PSUs), arranged by field of specialization (see below). In addition, most provincial-level MPS foreign NGO offices have posted more specific PSU lists for their provinces. Using these lists as a guide, organizations can reach out to relevant PSUs directly to request their sponsorship. According to one source, MPS representatives have indicated that the MPS will not assist foreign NGOs by helping pair them with PSUs.