A well known Bitcoin Mining hardware manufacturers company name "Ebong Communication", from China filled a application for a IPO (Initial Public Offering) with the Hong Kong Stock Exchange to collect the fund and encourage the investors.
This Zhejiang based firm was working with a team of advisers on a Hong Kong float, seeking to raise fund as much as staggering $1billion to growth.
The filling does include a financial statement which states that Ebang earned 925 million Yuan ($141million) last year as a revenue.
Also Ebang communication claim that the demond of Bitcoin mining Hardware in increasing year by year with more 20% every year.
So, I can say that one side Blockchain based start ups are collecting fund through ICOs (Initial coin offering) another side the start up company which is manufacturing hardware to mine those coins looking for IPO.
I can say that IPO investment is still a safe & secure investment than ICo investment.