Which region does the license plate 'Hei M' represent?

[DiHope]

Hei M is the license plate for Suihua. Suihua is a prefecture-level city in Heilongjiang Province, meaning 'peaceful and auspicious' in Manchu language, located in the central part of Heilongjiang Province. The license plate codes for other regions in Heilongjiang Province are as follows: Hei A---Harbin, Hei B---Qiqihar, Hei C---Mudanjiang, Hei D---Jiamusi, Hei E---Daqing, Hei F---Yichun, Hei G---Jixi, Hei H---Hegang, Hei J---Shuangyashan, Hei K---Qitaihe, Hei L---counties and county-level cities under Harbin, Hei M---Suihua, Hei N---Heihe, Hei P---Daxing'anling, Hei R---Heilongjiang Agricultural Reclamation Administration Bureau (Reclamation Area).