legal ground
Article 33 of the Financial Rules of the Institution
Special funds include:
(a) repair and purchase fund, that is, according to a certain proportion of business income and business income, and in accordance with the provisions in the corresponding purchase and repair subjects charged (50% in each column), and in accordance with other provisions into the institutions of fixed assets maintenance and purchase of funds. Institutions with less business income and less business income may not withdraw repair and purchase funds, and institutions that implement depreciation of fixed assets may not withdraw repair and purchase funds.
(three) other funds, that is, special funds drawn or established in accordance with other relevant regulations.