GST for a new organization

Maya (Student) (658 Points)

21 June 2018  
Dear frds/ experts,
One of our client is going to start a coir business like small scale industry . He wants to know,

1) At which stage he has to register for GST? Is it mandatory at the initial stage itself?

2) what are the necessary things to obtain for that?

Plz treat urgent & earliest reply would be greatly appreciated.

Thanks,
-Maya.