Ct-3 procedure

Hi All, 

We are the manufacturer of Fiber Swimming Pools from last 10 years. This FY 2015-16 we have crossed total TO 1.25 crores, and we are expecting +75 lakhs of Sales at the end of this FY. Iwould like to know towards what are the rules and regulations of excise department. And is it mandatory to register in excise dept.

Kindly advice for further steps.

Thanks in advance.