Research on risk monitoring and prevention mechanism of capital guarantee chain 并列题名：Research on risk monitoring and prevention mechanism of capital guarantee chain Research on the generation and prevention mechanism of mafia-like gangs and evil forces Research on the policy roots and prevention mechanism of firm zombification Research on coordination and incentive mechanism of closed-loop supply chain Research on price strategy and coordination mechanism of closed-loop supply chain 并列题名：Research on the generation and prevention mechanism of mafia-like gangs and evil forces 并列题名：Research on price strategy and coordination mechanism of closed-loop supply chain Research on the formation and operation mechanism of technological innovation ecological chain Research on the occurrence and prevention mechanism of edible agro-products farmer's moral hazard behavior