China Securities Regulatory Commission announced new regulations on calculating securities firm’s net capital and strengthening requirements for its risk management, Shenzhen Business Journal reported.   A key element is that brokerages must hire accountants to carry out monthly audits of their net capital and exposure to risk. According to the new regulations, the calculation of securities sale, long-term investment, fixed asset, intangible asset and mortgages have to include possible asset value decrease according to respective accounting standards.   Securities brokerage firms must have net capital of at least 20 million yuan. The basic net capital requirements rise to 50 million yuan if a company is also involved in other services such as capital management. If the companies provide several services, their net capital must be no less than 200 million yuan.   Securities firm’s stock investment has to be readjusted according to different stock categories and flow. If the stock fit the standard of two or more categories, the highest level of risk management has to be executed.   Ratios between the net capital of securities companies and their debt should be no less than 8 percent, while the ratio between net assets and debt should be no less than 20 percent, the regulator said.