Just place the order on the website.
If you have questions, ask them here. Don't email or call for any questions. All questions need to be asked & answered here on the forum.
After you've soldered the chip to your custom PCB and you have any results or feedback, I'd prefer to see it here on this forum thread. But if your PCB is secret and you can't share photos or details here, then email.
Only call if there is an urgent problem with your order, like the UPS says they're giving up delivering the package, a mistake in billing or shipping address, an issue with your credit card, etc. Do not call for any technical questions or feedback. PJRC has a hard rule about no telephone tech support (it takes way too much time and the answers don't benefit anyone else). All tech questions need to be asked here on this forum.
Ok. Perfect. One other question then. I need the chips shipped to China. That is where my designer is. I see that there is an option to send there which takes 1-3 weeks, but if I want it there quicker, there are 2 other methods. Can I place an order from USA and have it shipped to China with the Fast method?