You don't mention the identical brand you bought direct from China but I'd be curious who the manufacturer was and if you continue to use any of the three lamps you purchased for just veg?
When I want to follow up on the Made in America claim I like to check and see if the products are UL rated. This will at least tell the buyer what country UL certification is based upon and represents another way for the customer to follow up factory direct if a manufacturers distributor/retailer isn't being helpful should it ever come to warranty related issues. With your lamps you know they came out of China but if you pop in the manufacturer it would be worth noting if they are listed and performed up to UL standards.
If you go to:
http://database.ul.com/cgi-bin/XYV/template/LISEXT/1FRAME/index.html and do a search under the Chinese company name who made your lights you can see if they're listed. A name search for Inda-Gro in this same UL database and you'll see them listed out of San Diego CA with both US and Canadian UL certifications.
I had a 420 driver fail after only about 8 months of running it. I determined it was the driver and not the lamp because I checked it against a known working lamp first from my other room. I called and spoke with Darryl at Inda-Gro and after giving me an RMA number told me to send just the driver down for repair. The shipping back to Inda-Gro would have been on me but they would have shipped the repaired driver back on their dime. Shipping wasn't the problem it was the fact I was flowering in week 7. So instead I'm only a couple of hours away and I decided to just take a ride down there and see if they could swap it out with another ballast or fix it while I waited. They had no problem with that and I was out the door.
When I got there they put it on a scope and diagnosed a MOSFET failure on the board. They soldered a new MOSFET on and that did fix it. There was no charge and I was out of there in about 30 minutes. Normal warranty turnaround is same day plus whatever shipping time. While I was there I got to see for myself was how the lights are in fact being built in San Diego with individual component sourcing from all over the world, including the USA.
So while I left there having a better understanding of what goes into these lights and the technology for me what was most important is how they responded and got me through this Blue Dream Herojuana grow without any serious consequences. Weeks 1 -8 pics from clones to a 56 day harvest came in @ 466g dry.
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