I want to sell the patent to the factory by email. Which departments should I write to and which positions should I accept? Urgent! thank you

Recommend patented technology or products by email, which can be written to two kinds of people. One is R&D manager, who is responsible for the research and development of new products and services. May need; The other is enterprise executives, such as factory directors and general managers, who are also concerned about how new patented technologies can help their own enterprises develop. ...