My humble suggestion is this: next time, if you don't have a good reason to recite publicly a litany of unfounded assumptions about an entire country and people, don't -- write something like this instead:
> Incredibly impressive. I know nothing about China.
(If you have to preface your statements with "This may sound horrible and racist", they probably are.)
Be civil.
It seems (to me, at least) that you're saying it so aggressively and childishly, your comments are likely to be discarded and ignored rather than considered.
Re: reasonable position
If you have an epiphany that you've been operating on stereotypes (which in this case are racist, IMO), and you want to share the wonder of having your eyes opened to something you couldn't see before, the first thing to do is not to stream those now-understood-to-seem-racist misconceptions -- especially with no discussion of them. You could, instead, talk about what you learned, or why you believed those bad ideas.
And I don't mean why, as in, "because some friends had a bad outsourcing experience." I mean, why are you operating on stereotypes and unfair reductions, especially when you already admit they are wrong.
What would you think if someone said,
"Amazing job. I know it's racist, but I always thought blacks were too busy sitting on their porches drinking 40s that they bought with welfare money. I know too many friends who've had bad experiences with black people. It must be really hard to run for President."
Would you think such a person is having a genuine epiphany and sharing true insight into their own misguided worldview? I would think that the author of the comment is doing a bad job of it, at best. At worst, I would think that person learned nothing, but would like to say something anyway.
I do maintain that it is, in some sense, a "reasonable" position for a racist to be more offended by incivility than by racism. Not ideal, or even good, but certainly understandable.
And, this doesn't even mention human rights.
If you take off your politically correct hat for a moment you'll see that the comment "cheap, hacky, non-reliable, lawless, and poorly done" is warranted and quite generous in its phrasing.
It's not racist (since China isn't a race), and it's perfectly ok to make statements about a countries exports. Just as its ok to say that Swiss trains run on time, Swedish cars are built like tanks and french wine is good stuff. Not every french wine is great, and not every export from china is crap, but most french wines are good, and most chinese cheap plastic goods are crap too.
And there are exceptions on the cheap stuff too, for example I just bought an Aoson M11 Android tablet for 125€ from there and the overall quality seems very good.