Yes it is untill you are investing in right Projects. There are many projects in the market with great potential in future. But you have to identify them. And hold them untill they rise to the top.
Ao it depends on your investment skills whether it safe or not. If you have a great sense of investment then its completely safe
more risky if you don't know about the project, investing is a matter of researching and waiting long enough for you to make a profit and not a short time.
so it will not be easy to determine 1 really good project from the start.