How long will cost for delivery to Amazon FBA warehouse from China ?

MYHOME: Differnt Country and different service are different transit time. 

To USA & Canada, Sea freight service : 30-40 days; Air freight service : 12-15 days; Express courier service : 4-6 days.

To Europe, Sea freight service : 30-40 days; Railways service : 25-30 days; Air freight service : 12-15 days; Express courier service :4-6 days.

To Japan, Sea freight service : 12-15 days; Air freight service : 5-6 days.

To Australia, Sea freight service : 18-25 days; Air freight service : 7-10 days.