All of the countries expressing concerns are Pacific rim countries that have to share the pond with China. Xi is a ruthless old school communist (like Lord Opti) spreading his foul doctrine worldwide subtly into other 2nd/3rd world countries through infrastructure projects &
re-educating killing millions who disagree with him including the Muslim genocide now going on in 're-education' camps along with the destruction of their up to 800yo mosques. Now Middle Eastern influences have caused several mass knife atrocities in China hence the clamp down. I don't have a problem with killing terrorists who represent 0.01% of Muslims as misfits, but I do with the slaughter of the 99.99% who don't. On top of this you have the Great Internet Wall of China & the all intrusive sinister 'good citizen' points system.
How does this affect the West?
Totally, from them being the biggests hackers & attackers of the Internet to being total Geopolitical adversaries in attempted takeover of key Western companies, university research through grants, undergrad & post-grad students (UK is badly compromised on this with US a close second) to the constant attacks on our security services & telecom sleepers whether through consumer or business telecoms equipment. Do we know the broadcast codes to enable hardware snooping? No. US has currently many Chinese students & employees on espionage charges & 'cheapest' US government procurement contracts won anti-virus Kaspersky software into many sensitive US Gov. areas which was used by the Kremlin to embarrass the CIA, NSA & Pentagon from their esponarge & public release of secrets, especially though the Russian front of Wikileaks.
This is why the banning of Huawei from a hostile communist nation is totally justified.
If we allow Huawei equipment how will it affect our 5-eyes status. May is killing UK 5-eyes participation, so we can expect regular fatal terrorist attacks in the UK, like in Sri Lanka. Her WA agreement includes sharing 5-eyes intel with ALL EU countries including close Russian allies of Croatia, Hungary & Greece. This simply won't happen where it exposes sources & Intel to Russia & China, so we simply will be excluded from most sensitive Intel including UK terrorist warnings. Protecting Intel & sources from adversities is always the number one priority for intelligence agencies, so they can use them again & again, but also to stop them being topped!
UK Politics: May: Total clueless is, clueless does, where she as an overpromoted poor office junior who is totally & uttily out of her depth on everything & is destroying UK democracy, international credibility & UK armed forces & security.
She is a treason weasel traitor & EU Agent that needs to be put on trial & locked up for the rest of her life.
I personally I have never ever seen such damage done to the UK & our interests (Lord Haw Haw was less damaging & we rightly hung him).
If you want to stop commie Corbyn being PM, then like me support the current rapid Conservative extinction & support Nigel Farage & The Brexit Party who are the only credible party that can in our first past the post electoral system stop him.