Margin transaction (account sale) is the result of market development. However, credit risks and credit management exert a significant effect on the development of an enterprise, which can even directly threaten the survival of an enterprise.

• 信用交易（即赊销）是市场发展的产物,但是信用风险和信用管理对企业的发展影响极大,甚至对企业的生存直接造成威胁。