What kind of things that's can't shipped outside China through China Post?

I just know that the flashdisks are allowed to be shipped out once at most 20 dishes. As for things that are forbbiden to be posted, here are some I know:
1. Various weapons, simulated weapons, ammunition and explosive devices
2. Forged (counterfeit) currency and forged (counterfeit) securities Custom Declaration When Exit China
3. Press items, roll film, photographs, phonograph disc, video disc, tape, video tape, laser video disc, laser audio disc, computer storage medium and other items that are harmful to Chinese politics, economy, culture, and social morals
4. Various deadly poisons
5. Addictive substances, including, opium, morphine, heroin, hemp, as well as other narcotics and psychotropic drugs
6. Priceless relics and other museum pieces whose export is prohibited
7. Endangered plants and their specimens, seeds, as well as the materials for reproduction
8. Manuscript, roll film, photographs, phonograph disc, video disc, tape, video tape, laser video disc, laser audio disc, computer storage medium and other items related with the Official Secrets of China