I would like to find the way to go to Yiwu from hangzhou airport. Please recommend.

You can take direct long-distance bus at the airport, and get to YW. The bus schedules are from 10:00 to 22:40 with the frequency of around 40 mins. The duration is about 2 hours. It costs CNY 62 per person.

What if i want to take a train? I found that train will take only 1 hr. but I am not sure whether I can take it from airport or not.

For the bus, is there a bus from airport to YW? Where can i get there?

No, you cannot take a train from the airport. If you wanna take it, you can take direct airport shuttle bus to East Railway Station first. The duration is about half an hour. It costs CNY 20 per person. Then take a bullet train to the destination.

For direct long-distance bus, you can take it at the airport. This is the most convenient way for you to choose. You can easily find the pick-up station according to the English sign in the airport. Don't worry.