GST Rate in Govt Works Contract

Siba Sankar Pahari (23 Points)

08 September 2019  
Dear,
we are the contractor (work contact) of Govt. Organization and billed @ 12%.
Now we also sublet the project to different contractors job wise i.e Civil Work, UPVC work, Electrical work ( all the work is with material) .
Now questions is in which GST rate we can take Tax Invoice from Contractors.

pl. clarify and send any Notification regarding .

thanks