Gst rate or supply of poly house or shade net house

Dear All,

I have tried my best for searching the HS Code and GST rate related to

1. Supply of Poly House to Government concern  or others (With Material and Labours)

2. Supply of Shade Net house to Government Concern or others (With Material and Labours)

3. Agriculture support service code 9986 is related to Nil GST.  Can I make supply of above two points against this HS Code.

Kindly help me.