What is the difference between a project assistant and a product assistant?

The scope of functions they are responsible for is different: the project assistant needs to assist in managing multiple products in one or more projects, while the product assistant only focuses on the products he is responsible for.

The work focus is different: the project assistant only needs to pay attention to whether each part of the project is on schedule from a global perspective, and the product assistant only needs to be responsible for whether the progress of related products is completed.