从400电话诞生到现在，400电话已成为企业的明星，400电话作为企业的销售和客服的形象代表，也是企业对外的最好形象，所以选择400电话服务商时必须要注意一些事情：
From the birth of 400 telephones to the present, 400 telephones have become the stars of enterprises. 400 telephones, as the image representatives of sales and customer service of enterprises, are also the best external image of enterprises. Therefore, when choosing 400 telephone service providers, we must pay attention to some things:
1、不要购买价格太低的400，因为一分钱一分货。
1. Don't buy 400 at too low a price, because every penny is worth every penny.
2、不要借用或者使用假证办理业务，因为运营商查得很严，一旦发生，使用假证办理的400电话号码就会被停用。
2. Don't borrow or use false certificates to handle business, because operators check very strictly, once it happens, the 400 telephone numbers handled with false certificates will be stopped.
3、选择的后台必须功能强大，这代表着一个公司的实力和能力。
3. The backstage of choice must be powerful, which represents the strength and ability of a company.
4、选择有优质的售后服务，是否拥有400电话代理商的资质。
4. Choose high-quality after-sales service and have the qualification of 400 telephone agents.