Mainland companies can check item 13 of form e in Vietnam

Can the mainland company tick the 13th item of form e certificate of origin? The situation is like this. We are a trading company in Shanghai. We have a lot of goods exported to Vietnam Ho Chi Minh. Our customers asked us to provide form e for customs clearance. However, our company did not register with the customs, so we could not apply for form e certificate of origin. Later, we found an agent to issue a form issued by the agent E. the first column of the certificate of origin shows the name of the agent company, and our company's head is shown under the goods description, but now our customers require item 13, the party We need to check the invoice office, but our cooperation agent said that only when the goods description shows the offshore company, our Shanghai company can't do so, but now the customer has asked us to do so. Can you do it according to the customer's requirements?