Does the Chinese quartz supplier have a showroom or warehouse in San Diego?[/quote]
I bought at q place called AM China Nevada. I don’t think they have a showroom in San Diego. White Quartz at $220 for 2×9 slab is a steal. Normally in the $400s, or high $300s for sure.
Builder elements an affiliated network I believe and they have showrooms in San Diego. I bought from MIC unlimited in San Diego before, but they are not Chinese owned. Granite not Quartz
Quartz is more fashionable these days and easier maintenance. Granite with all the veining (sometimes way too much and a desired feature some years ago) looks busy and dated.
I can recommended a granite guy if you are hands on. Don’t expect him to design the kitchen for you. But he can install based on your own design.