在国际贸易中，履约保函是一种很常见的保证方式。中英文履约保函的写作模板有一定的差异，下面将分别介绍中英文履约保函的写作模板。

中文履约保函模板：

尊敬的(受益人名称)：

根据贵公司要求，我们愿意为您提供下列有关(合同名)合同履行的保函：

1.受益人：(受益人名称)

2.合同金额：(合同金额)

3.履行期限：(履行期限)

4.保函金额：(保函金额)

5.保函有效期：(保函有效期)

在此，我公司在不可撤销和不可撕毁的前提条件下，遵守以上规定，并照函保证款项及履行义务的付清。保证函有效期止，我们将无条件履行付款及义务。

特此保函为证。

此致

(贵公司名称)

签发日期：(签发日期)

签字盖章

英文履约保函模板：

Dear (Beneficiary),

In accordance with your request, we hereby offer to provide you with the following guarantee for the performance of the (Contract Name) contract:

1. Beneficiary: (Beneficiary Name)

2. Contract Amount: (Contract Amount)

3. Performance Period: (Performance Period)

4. Guarantee Amount: (Guarantee Amount)

5. Guarantee Validity Period: (Guarantee Validity Period)

Hereby, we undertake to abide by the above provisions, and guarantee the payment of the amount and performance of the obligations in full without revocation and damage. Until the expiration of this guarantee, we will unconditionally perform the payment and obligations.

This is to certify.

Yours faithfully,

(Your Company Name)

Issue Date: (Issue Date)

Signature and Seal

以上就是中英文履约保函的写作模板，不同语言对于格式和用语有所差异，但整体结构大同小异。根据具体情况，填写相应的内容，以确保保函的有效性和可靠性。