1. state financial funds: funds invested by government departments and institutions representing state investment in enterprises with state-owned funds. State investment in enterprises has always been the main source of funds for state-owned enterprises, and most of the existing sources of funds for state-owned enterprises were formed by state investment in the past.
2. Bank loans: Specialized banks in China are the main sources of funds and supply channels for enterprises' operating funds. In addition, the branches of the World Bank and foreign banks in China provide foreign exchange loans for domestic enterprises and foreign-invested enterprises, which is also an indispensable supplementary source of funds for China enterprises.
3. Funds of non-bank financial institutions: Non-bank financial institutions mainly include trust and investment companies, leasing companies, insurance companies, securities companies and finance companies. The funds of these institutions are also the source of supplementary funds for enterprises.