400電話重要的一點就是能為企業樹立一個好的形象，因為就目前而言大多數的企業還是沒有400電話的，而一些大型的企業集團對外的服務號碼都喜歡用400電話，這就無形之中讓人感覺用400電話的企業應該也是很有實力的值得信賴的企業,所以說，在證明了企業實力，提升企業形象的同時，400電話為客戶免了長途費用，就會吸引更多客戶，那企業的潛在客戶就會積累起來。
The important thing about using a 400 phone is that it can establish a
good image for enterprises, because currently, most enterprises do not
have a 400 phone, and some large enterprise groups prefer to use a 400
phone for external service numbers. This invisibly makes people feel
that enterprises using a 400 phone should also be very powerful and
trustworthy enterprises. Therefore, while proving the strength of the
enterprise and enhancing its image, By exempting customers from
long-distance fees for 400 calls, it will attract more customers and
accumulate potential customers for the enterprise.
再次，企業400電話，不會占線，免去了之前業務電話繁忙時占線的問題。
Once again, the company's 400 phone line will not be busy, eliminating the problem of busy business calls before.
第三，400熱線，不管是登在網站還是宣傳，都是企業一張閃亮的名片，如果客戶在一個使用普通號碼和400號碼的商家間選擇，400電話無疑是勝出的．
Thirdly, the 400 hotline, whether posted on a website or promoted, is a
shining business card for a company. If a customer chooses between a
merchant using a regular number and a 400 number, the 400 hotline will
undoubtedly win
第四，也體現了企業的實力，符合世界商業潮流。目前包含海爾、中信銀行等在內多家企業已全面啟用400號碼。與800號碼相比，可以州苗木 保定電動門 保定空壓機 化糞池模具 微型蠕動泵 保定強夯 收費島模具覆蓋多達5.2億手機用戶。主/被叫分攤付費的方式，有效杜絕惡意呼叫（800號碼主叫全免費）。
Fourthly, it also reflects the strength of the enterprise and conforms
to the world business trend. At present, many enterprises, including
Haier and China CITIC Bank, have fully used 400 numbers. Compared to 800
numbers, it can cover up to 520 million mobile phone users. The method
of shared payment between the host and the called effectively eliminates
malicious calls (all calls to 800 numbers are free).
第五，自助管理/方便開通，方便快捷，成本低。號碼終身攜帶，喬遷新址，增擴辦事處不用變更號碼。
Fifth, self-service management/convenient opening, convenient, fast, and
low-cost. The number is carried for life, and there is no need to
change the number when relocating to a new location or expanding the
office.
客服