Gray marketing: There are two different meanings. The first refers to marketing activities for seniors, also known as silver pride; the second refers to marketing activities that have moral or legal issues. Which of the following are not grey marketing:. ['A company deliberately imitates the packaging and decoration of another company, but it is so clever that it is difficult for the imitated company to sue it.', 'It is difficult for a legal agency to impose sanctions on a company when it contains implicit violence and pornography.', "The seller sells the goods by way of concession to the buyer's agent, so that the buyer's interests are partially occupied by his purchasing agent.", 'The production enterprise strictly abides by the agreement with the agent to ensure that the franchise of the agent is not infringed and protects their own interests.']