A micro channel message push

A micro channel message push

1. To understand the micro-channel

    - Public number
         - Certified Public number

         - Service number
         - Certified service number
         - Enterprise 
    
        Based: micro-channel service number certification initiative to push the micro-letter messages. 
        Premise: Focus on service number 
        Environment: sandbox environment
        

Sandbox environment geology: https://mp.weixin.qq.com/debug/cgi-bin/sandboxinfo?action=showinfo&t=sandbox/index