400电话办理流程：
400 Telephone Processing Procedure:
第一步选择400号码与资费套餐 ；
The first step is to choose 400 number and tariff package.
第二步提交400电话申请资料
Step 2 Submit 400 Telephone Application Data
第三步申请资料审核无误开通。
The third step is to verify the application data correctly.
400电话办理所需资料：
400 phone calls for information:
1、企业营业执照复印件(最新年检并加盖公章);
1. Copy of business license (latest annual check with official seal);
2、企业法人身份证复印件;
2. Copies of corporate identity cards;
3、400电话受理单;
3. 400 telephone acceptance list;
4、经办人身份证，及授权委托书等。
4. The identity card of the agent and the power of attorney.