信守[xìn shǒu]
abide by; honour; stand by:
例:信守协议
abide by an agreement; stand by an agreement;
信守和平共处五项原则
faithfully [scrupulously] abide by the Five Principles of Peaceful Coexistence; adhere faithfully to the Five Principles;
信守经济合同
fully honour economic contracts; fully abide by economic contracts