协议明确规定，所有产品必须通过质量检测后才能发货。

The agreement ___stipulates that all products must pass quality inspection before shipment.

合同明确规定供应商必须按时交货。

The contract ___stipulates that the supplier must deliver on time.

合同明确规定，付款必须在交货后30天内完成。

The contract ___stipulates that payment must be made within 30 days after delivery.