Where to invest for maximum percent Return on Investment

Where to invest for maximum profit nowadays in Pakistan.
Also, I want to discuss what about investing in real estate?

The services industry has the maximum return on investment but for that you would required skilled labor and technical knowledge to handle. Distribution will give you 2 to 5 percent margins whereas manufacturing something can give 25 to 30 percent but would require a setup. Trading would be the easiest thing for you. Just look out for products who’s prices are not well defined in market like jewelry, cosmetics, toys etc. You can also go for stocking things like certain foods and grains in cold storage which will have higher prices in the off season.