Here I'll rephrase your question and correct me if I am wrong because your English is rumbled up.
Where is the main host of asics since china close theirs doors?
you really need to work on your research skills and base on what I know china may not be part of them but the other countries for sure still counts are the main host of asics minere
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https://www.sunbirddcim.com/blog/largest-bitcoin-mining-farms-world_________________________________________________________
Where to buy Asics and how much average time a asics is "alive"?
and you might mean online and active?
Where can buy Asics? if there is a chance to do a google search "where to buy ASICS" there can be a chance you have it in your hometown mall and if you can go anywhere online lazada or shopee?
The average time a asics is "alive"?From What I know it's 24/7 its alive and it is said that 3 years it would be good and amazing.
Which Asics do you recommend?
here is answer base from research
https://www.guru99.com/best-bitcoin-miner.html and as I am not a veteran here is what I can only suggest if the majority of the people answered if in the product