客户每月需求量是792k。每天工作小时是22小时，一个月20天。
Customer Demand per month 792k. Working hour per day is 22 hours, 20 days a month.
机电工程署客户服务中心已实行五天工作，业界可以邮递或透过电子方式递交申请。
The customer services office of the electrical and mechanical services department operates on a five-day week. Trade members can submit applications by post or electronically.
一个聊天工具的服务端和客户端，大家可以参考参考。
A chatting tool services and clients, we can refer to reference.
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