Not necessarily, some need a letter of introduction from the company, which will be marked in the journal. The submission should be accompanied by a letter of introduction from the company, and the contact information should be clearly written. And others don't. But if there is a letter of introduction from the company, it will be relatively easy to submit the manuscript.

The company letter of introduction is actually a formal introduction document. Including title, title, text, ending, unit name and date, and comments. It also has the dual functions of introduction and proof. It can be said that the letter of introduction also played a role.