What is the best way to send a heavy (20kg) box of personal items from Guangzhou to Austria?

Hi, it depends on your demand. You can send it by air, SAL and surface. The air parcel is the fastest and also the most expensive one, which takes about CNY1,300 for 20kg and the surface parcel is the slowest and the cheapest, which takes about CNY 600. The SAL service costs about CNY 900 and it will faster than the surface parcel but slower than the air parcel.