?? ?????????????????????????
![](https://image.chezhanri.com/2019/1217/0bbfdeb1ec06a2bf533e8f3a1b6c99f8.jpg)
????:1??????????:??spa?????
2?????????
3?????
4??????????
5?????????
????????????????6??27?? ????????????????,?????????,???????????????(ISO/TC 81)??????????????????,?????????????????
????????????,??????“??”??????????????(FAO)???,?????????30%~40%????????????????????????????,???????????????????????,???????
ISO/TC 81?????????????????????,??????,??
????:???????????