Rikr, if it helps mine took 14 working days to take from BIO to Beijing airport to SG. They are a bit slow, but it'd get there. China as a few provinces, some are slower than others. Guangzhou (where Shenzhen is) is pretty fast....some use HK as point of exit.
I found HK (China's Special Administrative Region, actually I still see it as being nearly 100% autonomous) -> SG unregistered mail to be fastest. Eg XTAR batteries -> SG, HKEquipment -> SG. I have a couple of relatives there, they are not really China's Chinese.
I can see what the "issue" is. Batteryjunction USA posted last Wednesday and I got the batteries this Tuesday. And its only First Class International.
We get by with just buying an endless stream of products from China, LOL!