I received the Greatsonic GS-DS360 ultrasonic cleaner within 2 days of ordering, which is very fast. Very happy with that. I use the machine for vinyl LP cleaning with a motorised record mount/spinner ordered directly from China. I chose a UK supplier for the ultrasonic machine as I wanted UK support and warranty, and the peace of mind of getting a decent machine. The cheaper Vevor and Creworks machines have suspect build quality.. For one off quantities, it's not economic to order an ultrasonic machine directly from China because of shipping costs, and the difficulties of getting support make it not worthwhile. I have cleaned about 30 LPs so far with the GS-DS360 and the results are outstanding. Very happy. For the future I would like a 120kHz machine to offer a lower cost solution to the Degritter cleaner (made in Estonia) which currently retails over £2500 in the UK.