please Suggest any high value vegetable crop for poly house and shade net except capsicum, cucumber, tomato

I am an agriprenuer and regularly use polyhouses and greenhouses to maximize profits… i think that makes me eligible to answer this question….

For a good returns from polyhouse there should be precsion farming which requires a good maintenance of polyhouse.
Crops with high profits in any country are
Roses especially dutch roses, strawberries,  Gerberas
According to me floriculture is what it gives high returns because even if the market price fluctuates theres not much difference and you can earn good profit within a short span of time.

 
Cut flowers has huge export potential with huge profits
Exotic vegetables like brussels sprout, celary, etc.,
Concentrate on Off season production, automation, hydroponics /aeroponics under polyhouse, good post harvest quality for enhancing returns