400号码大气、简单、易记，骤然提升企业形象 400 number of atmosphere, simple, easy to remember, suddenly to enhance the corporate image 刊登广告，公司宣传，效果立竿见影，广告长期有效 Advertising, publicity, effective results, advertising for a long time effective 对外全国统一，电话不占线，业务不流失，搬家不换号 National reunification, the phone is busy, business is not lost, moving no change number 有效增加来电数量，增加沟通时间，有效留住客户 Effectively increase the number of calls, increase communication time, and effectively retain customers 主被叫分摊付费，提升品牌同时，避免恶意骚扰 The principal is called on to pay for the promotion of the brand while avoiding malicious harassment 增加来电机会，有效节省80%办公成本 Increase the opportunity to call, effectively save 80% office costs