Cryptocurrency cloud mining industry are full of scammer companies that offers a huge profit and fast return of investment (which is convincing especially if you don't have any idea about this). Sun mining is a cloud mining company that uses solar energy, but there are no proof that they really have a solar panel and mining farm that operates on real time, their location is also unclear which means they are hiding their real location, so whenever they want to disappear no one can find them. Just avoid all those cryptocurrency investment programs, they are not worth it.