as far as the responsibilities of a product manager are concerned, the first is to be responsible for planning activities related to the product, such as analyzing the market (consumers, competitors and external environment) and using this information to specify the marketing objectives and strategies of the product. The second is to cooperate with other departments in the enterprise, such as product research and development, production, sales and financial departments, and obtain the assistance and support of other managers through internal lobbying. Therefore, his work runs through the whole value chain.

product managers specify marketing objectives and strategies for the products they are responsible for. The key decisions they make are tactical and revolve around the marketing mix: how much should they spend on advertising? How to deal with the discount promotion activities of competitors? What kind of distribution channel is appropriate ... In short, the product manager has become the hero of the enterprise because of the product's every success in the market, and may also become the "Reservoir Dogs" beaten by everyone because of temporary negligence.

as for the size of the area where the product manager is responsible, it has little influence on the responsibilities, but the larger the area, the more you need to have a global vision and concept, and you have to bear greater responsibilities, and of course, you will get higher remuneration.