用一个10位数的400号码，绑定公司原有的多个电话，从此，对外只需公布全国唯一的400号码，统一宣传，简单易记。当您的客户拨打400号码，即可根据您的设置，将来电转接到公司原有的不同号码上，客户记住了400号码，就等于记住了企业。
A 10 digit 400 number is used to bind the company's original multiple phones. Since then, only the unique 400 number in the whole country needs to be publicized, which is simple and easy to remember. When your customer dials the 400 number, you can transfer the call to the company's original different number according to your settings. If the customer remembers the 400 number, it is equivalent to remembering the enterprise.
当公司因搬家等原因需要更换公司原有电话时，400号码无需更换，只需将400号码下绑定的电话更换即可，业务绝不流失。企业申请的400号码是全国唯一的虚拟号码，可以终生不变。当公司搬家（即使是跨省搬家），只需更换400号码下绑定的实体电话号码(座机、手机)即可，老客户依然可以照常拨打，客户一个也不会流失，还为您节省了大量重新印制宣传品的费用，也免去了逐一通知老客户的麻烦。
When the company needs to change the original phone number of the company due to relocation and other reasons, the 400 number does not need to be changed, only the phone bound under the 400 number can be changed, and the business will not be lost. The 400 number applied by the enterprise is the only virtual number in China, which can remain unchanged for life. When the company moves (even across provinces), it only needs to change the physical phone number (landline, mobile phone) bound under the 400 number. Old customers can still call as usual, and none of the customers will be lost. It also saves you a lot of expenses for re printing promotional materials, and avoids the trouble of informing old customers one by one.