I just posted a guest article about the basics every importer should be familiar with, on the China Sourcing Blog. They do a great job publishing very informative and practical posts.
My article was a little on the long side, but I don’t see how a short article could list all the important concepts. The four parts are:
Inspection levels
The AQL (Acceptance Quality Limit)
When to inspect
Putting it all together
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UPDATE 29 Apr. 09: this article was later also posted on Smart China Sourcing under this name: Quality Control Basics.