For the T-bond contract, any Treasure bond that has at least 15 years to the nearest call date or to maturity (if non-callable) can be used for delivery.

对于国债期货，任何距最近的赎回日或到期日（假如不可赎回）长达至少15年的国债可用于交割。

youdao

For the T-bond contract, any Treasure bond that has at least 15 years to the nearest call date or to maturity (if non-callable) can be used for delivery.

对于国债期货，任何距最近的赎回日或到期日（假如不可赎回）长达至少15年的国债可用于交割。

youdao