I don't see this mentioned in the article, but I think the author makes the assumption that his Chinese company would have been more reliable / more experienced and would not have made these sorts of mistakes (which could be accurate, don't know the two companies). Imagine the setbacks his company had, except then add the delay of cross ocean (air or ship) shipping. Unless things had gone perfectly with the Chinese company, they may still have gotten a faster turn around having it in the US. He mentions in a comment here that they're thinking about doing a second batch overseas, I'm curious to see the turnaround on that.