400電話辦理，主要有運營商和服務商兩種渠道。由于運營商成本高，資源少，時間長，服務商已經成為企業的主要辦理方式。
400 telephone handling mainly includes two channels: operators and service providers. Due to the high cost, few resources and long time of operators, service providers have become the main handling mode of enterprises.
在服務商辦理，企業只需要預存話費就可以申請開通，號碼免費選擇，也無需月租和開戶費，而且服務商號碼資源豐富，功能齊全，更容易滿足企業需求。
When handled by the service provider, the enterprise can apply for opening only by pre depositing the call fee. The number is free to choose, and there is no need for monthly rent and account opening fee. Moreover, the service provider number has rich resources and complete functions, which is easier to meet the needs of the enterprise.
400電話是針對企事業單位辦理蓋土網 防寒布 麻繩 油麻繩 麻刀 瀝青麻繩 靜壓造型線 自動澆注機 鑄鐵拍門 鋼制拍門 玻璃鋼拍門的，企業在申請的時候，需要提交營業執照，法人身份證等資質，還需要填寫400電話受理單，因此，個人是無法申請開通的。
400 telephone is handled for enterprises and institutions. When applying, enterprises need to submit business license, legal person id card and other qualifications, and also need to fill in the 400 telephone acceptance form. Therefore, individuals cannot apply for opening.
需要注意的是，企業在選擇服務商的時候，一定要選擇正規可靠，資源豐富的，要檢查營業執照等資質，確保安全，防止被騙。
It should be noted that when choosing service providers, enterprises must choose regular, reliable and resource rich ones, and check their business license and other qualifications to ensure safety and prevent being cheated.