一、以下是新西兰蓝干牛皮报关所需的一些资料和文件：

The following are some information and documents required forcustoms declaration:

1、商业合同、装箱单以及其他商业相关证件，证明您的商品的来源和交易情况。

1. Commercial contracts, packing lists, and other commercial related documents to prove the source and transaction status of your goods.

2、报关报检委托书，用于授权相关机构代表您进行报关和报检手续。

2. The power of attorney for customs declaration and inspection is used to authorize relevant institutions to handle customs declaration and inspection procedures on your behalf.

3、进出口经营权，证明您具备进行进出口贸易的资格和权限。

3. Import and export management rights prove that you have the qualifications and authority to engage in import and export trade.

4、原产地证书，用于证明您的商品的原产地，以便享受相关的关税优惠或贸易协定待遇。

4. Certificate of origin is used to prove the origin of your goods, so as to enjoy relevant tariff preferences or trade agreement treatment.

5、供应商在中国的注册登记备案号，用于确认供应商在中国合法注册并合规经营。

5. The registration number of the supplier in China is used to confirm that the supplier is legally registered and operates in compliance with regulations in China.

二、以下是新西兰蓝干牛皮进口报关流程的简要步骤：

1、提交相关资料并交纳税款：准备并提交所需的报关文件和资料，并支付相应的进口税款。

2、发货到对应港口：将货物运送至指定的港口。

3、港口信息备案：提前准备并备案港口相关信息，以确保进口流程顺利进行。

4、备货及准备单证：进行货物备货工作，并准备所需的报关单证。

5、进口报检/报关（审价、查货）：进行进口报检和报关手续，包括海关审价和货物查验等环节。

6、工作人员商检，等待放行：海关工作人员进行商检程序，并等待海关放行货物。