客户想要知道出厂的确切时间 怎么说？

The customer wants to know the exact ex-factory date.
出厂：ex-factory

Our client want to know the exact time of cargo departing from factory.

client wants to know eht exact time of exworks

Customers want to know when to go out the factory exactly.

出产
exact time of production

Leaving the plant exact hour is 8：30