Re: i need answer

if i understood correctly, you want to know which company existed before the current one, in mining?

you is near. which company existed before if existed , similar bit-x and hashnest ? before was similar company such us bit-x and hashnest if nowaday this company is best and never will destroy ?

this i know.
example: cex.io Existed for a long time

Easy to understand.

If you're looking for a pool? To mine with? Any pool is ok as long as you don't keep btc with them.
If you're asking for a trusted hardware provider? Bitmain should work.
If you're asking about a company's history? Hashnest sure. However hosted mining has not been profitable for many.

I have had dealings Bitmain and is a good vendor of hardware.

I have no experience with bit-x

i do will buy GHS ? I will not lose money /??

i want will buy very lot GHS .

you what Advice me ?

amount of GHS you are buying would probably not affect your payout/gh unless you are solomining which increases your chance of getting a block. you would most probably lose money in the process due to the amount of maintenance fees per gh and price or difficulty increase.