How do you build something reasonably if you do not use components built from across the glob. Ever electronic component, timers, acceptors bill validators and controller in the wash, most of the guts in pumps, have parts from southeast Asia -China, Korea, etc, India also.
Untill we are all willing to pay higher costs it will stay that way.
It's a bit like my solar panels. The installer says they have a 10 year warranty but when one fails they say now call the Chinese manufacturer to get it replaced. At least with an American manufacturer there is some incentive (albeit maybe small) to keep their reputation positive and to keep customers happy.....I would buy American....
Let us know if you do proceed. I saw a sad post (talk car wash maybe) a couple years ago on a guy that bought 2 from china but couldn’t make money due to no parts and tech support and they had many problems. I would proceed cautiously or go AMERICAN
Curious: is this for install in America?
The American standard electrical is 60Hz;
Is the carwash system based on 60Hz? If not, then if the HMI/PLC is expecting 50Hz for counts, it'd be difficult to get your timing correct on US power.
Are the plumbing fittings American standard; If not you'll likely want to track down a US supplier for your replacement fittings and hoses and tubes.
Are the bolts/nuts American standard? If not, you'll likely want to track down a local supplier for your nuts/bolts.
If not...you'll likely have to order from overseas, and deal with the down time....or just canabalize one for the other (assuming you have two systems on hand).