Probably have to wait for customers to come to the country because the Thai decision to ด้รับการ from customers that want the DHL operations, or because the customer must be registered with the Customs Department.
I have to wait for customers to come to Thailand because it had been decided by DHL customers that want to carry them or not, because customers need to register with Customs here.
Have to wait for the customers arrive in due to the decision of customers that need DHL continue providing or because customers must register with the Customs Department.