Just a follow up question if you don’t mind, what are the time and costs difference tend to be between air freight and air express?

depends on your product type , volumue and weight

No reason not to ask for different quotes. As Lam Clarencesays, there is a lot to the answer that also includes how quick do you want it and do you want the simplest door-to-door service.

My experience (interested to hear what others say) for VERY rough guesses:

0-200kg use Currier (express[FedEx, DHL, UPS, etc) [3-10 days] with added benefit of door to door,

200-500kg use Air Freight [7-14 days] likely need Freight Forwarder, Customs Broker, local transportation to door

300kg+ use sea [25-45 days] likely need Freight Forwarder, Customs Broker, local transportation to door.

But there is a great deal of overlap based on product value, weight, size and product type.