The shipping time from China to Singapore depends on the shipping mode. With air freight, you can ship between 2 to 5 days for door to door service. And with sea freight, boat transit takes only about 5-7 days, door to door delivery takes about 15-21 days. For sea freight, LCL and FCL shipping time also differs. You should also add the time to clear the cargo and inland transportation time for the exact shipping time.