I query his trustworthiness.

我对他的可靠性有怀疑。

Fourthly, we should draw into honesty and trustworthiness mechanism, mediative mechanisms among association and perfect the diversification of disputing settlement mechanism.

第四，引访纷机制、行会调解机制及利益解纷机制，完善多元化的纠纷解决机制。