To ensure that rewards are given when deserved and punishments are meted out when necessary; to be strict and impartial in rewards and punishments.
部门经理在团队管理上一直坚持赏信罚必的原则，因此大家对他的决策都非常信服。
The department manager consistently adheres to the principle of ensuring due rewards and necessary punishments, which is why everyone deeply trusts his decisions.
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