EMCs and ETCs generally have a long term relationship with their Supplier/Customers For an EMC,it would be a Customer. For an ETC, that same customer would be considered a supplier. Forward often work on a single shipment for a customer,but that would be unusual for an EMC/ETC. If you think about how EMG and their customer work together/that makes perfect sense. Except in the case of a product that is extremely expensive or.